+1-800-504-5897 Help Center Check Order Status
About Us Policies Reviews How To
Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

  • Entire Store
  • ...
  • Apparel & Footwear
  • Astronomy
  • Everything Else
  • Eyewear
  • Hunting Gear
  • Lab Equipment
  • Military Gear
  • Outdoor Gear
  • Photography Equipment
  • Police, EMS & Fire
  • Shooting
  • Sport Optics
  • Sports & Hobbies
TIP
Shopping Cart

Sea to Summit Basecamp BT 3 Sleeping Bag Synthetic

Basecamp Thermolite BT 3 Synthetic-Red-Large
Basecamp Thermolite BT 3 Synthetic-Red-Large
1 of 1 images
Basecamp Thermolite BT 3 Synthetic-Red-Large

Tap Tap to Zoom

Questions & Answers

Product Discontinued by Manufacturer

Sea to Summit Basecamp BT 3 Sleeping Bag Synthetic has been discontinued by Sea to Summit and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Camping Gear, Sleeping Bags yourself to try and find the perfect replacement for you!

Product Info for Sea to Summit Basecamp BT 3 Sleeping Bag Synthetic

The generously sized and ultra-versatile Basecamp options are also available in a synthetic version. This is an excellent choice whenprice and easy care are key considerations. These sleeping bags havethe samegenerous rectangular shape and versatile design as the down version. They are insulated with Thermolitethat is built into the bags using a unique Wave Loft constructionandhelps retain warmth. The inner fabric is a soft, luxurious polyester that feels like silk for sleep-filled comfort. With multiple zippers, the Basecamp allows you to cozy up to your partner by zipping bags together, vent when it gets too hot, or remove the top entirely to use as a camping quilt or blanket. The Basecamp models have been designed to work with a sleeping mat and pillow to create a comprehensive sleep system you can really get comfortable with.image

Features of Sea to Summit Basecamp BT 3 Sleeping Bag Synthetic

  • Uses THERMOLITE synthetic insulation
  • 2D PermaShell water-resistant shell fabric
  • Spacious rectangular shape
  • Pillow attachment system under the hood to hold an Aeros pillow in place (not included)
  • Two positions sleeping mat attachment system
  • Zip draft tube with anti-snag
  • Cushioned internal hood draw-cord
  • 2-way YKK #5 zip on each side of the bag
  • Can zip to any Trek, Talus, Latitude, or Micro (model year 2017 or newer) sleeping bag
  • Includes a Nyloncompression bag

Package Contents:

  • Sea to Summit Basecamp BT 3 Sleeping Bag Synthetic

Sleeping Bag Accessories

1–24 / 24
Previous
Exped MegaMat Duo+, Cypress, Duo LW+, 7640277846432
Exped MegaMat Duo+, Cypress, Duo LW+, 7640277846432
$449.95
Exped MegaMat
Exped MegaMat
As Low As
$259.95
See all 2 models
Exped LuxeWool Pillow, Moraine, 7640277840928
Exped LuxeWool Pillow, Moraine, 7640277840928
$59.95
Free 2 Day Shipping
Big Agnes Alpha Direct Fleece Sleeping Liner
Big Agnes Alpha Direct Fleece Sleeping Liner
$149.95
See all 2 models
Exped Schnozzel PumpBag UL, Sunshine, Medium, 7640445457866
Exped Schnozzel PumpBag UL, Sunshine, Medium, 7640445457866
$49.95
Blazin' Deal
Exped Widget Pump Pads
Exped Widget Pump Pads
As Low As
$64.49
See all 2 models
Blazin' Deal
Insta-bed Raised 18 in Queen Pillow Top Air Mattress with NeverFlat Pump
Insta-bed Raised 18 in Queen Pillow Top Air Mattress with NeverFlat Pump
As Low As (Save Up to 40%)
$137.99
See all 2 models
Exped MegaPillow Pads
Exped MegaPillow Pads
$69.95
See all 2 models
Big Agnes Cotton Sleeping Liner - Kid's, Dark Slate, Kids, BLCK26
Big Agnes Cotton Sleeping Liner - Kid's, Dark Slate, Kids, BLCK26
$39.95
Free 2 Day Shipping
Big Agnes Zoom UL Insulated Sleeping Pad
Big Agnes Zoom UL Insulated Sleeping Pad
As Low As (Save Up to 26%)
$185.99
See all 3 models
MIL-TEC Poncho Liner
MIL-TEC Poncho Liner
As Low As (Save Up to 31%)
$42.19
See all 6 models
Exped Down Pillow
Exped Down Pillow
$79.95
See all 2 models
Exped MegaMat Duo, Cypress, Duo M, 7640277846425
Exped MegaMat Duo, Cypress, Duo M, 7640277846425
$399.95
Free 2 Day Shipping
Big Agnes Rapide SL Insulated Sleeping Pad
Big Agnes Rapide SL Insulated Sleeping Pad
(2)
As Low As
$159.95
See all 8 models
Matador Blackout Travel Pillow, Black, MATNP001BK
Matador Blackout Travel Pillow, Black, MATNP001BK
$39.99
Big Agnes Insulated Sleeping Pad Cover, Dark Slate, AISPC26
Big Agnes Insulated Sleeping Pad Cover, Dark Slate, AISPC26
$99.95
Big Agnes Cotton Sleeping Liner
Big Agnes Cotton Sleeping Liner
$49.95
See all 3 models
Military Surplus GI Genuine Poncho Liner, 62 x 82in, Nylon, Woodland, GIWDLPLN
Military Surplus GI Genuine Poncho Liner, 62 x 82in, Nylon, Woodland, GIWDLPLN
(1)
List: $55.99 (Save $4.00)
$51.99
ALPS Mountaineering Vertex Air Bed - Queen, Blue, 56 In x 80 In x 6 In, 7632102
ALPS Mountaineering Vertex Air Bed - Queen, Blue, 56 In x 80 In x 6 In, 7632102
$199.99
MIL-TEC Trilam. Sleeping Bag Cover
MIL-TEC Trilam. Sleeping Bag Cover
As Low As (Save Up to 28%)
$69.99
See all 4 models
Big Agnes Super Light Girdle, Small/Medium, Gray, ASLGSM22
Big Agnes Super Light Girdle, Small/Medium, Gray, ASLGSM22
$29.95
Newly Added
Sea to Summit Ultralight Endurance 3 Air Mat
Sea to Summit Ultralight Endurance 3 Air Mat
As Low As
$119.95
See all 3 models
MIL-TEC CIV-TEC Phantomleaf Trilam. Sleeping Bag Cover
MIL-TEC CIV-TEC Phantomleaf Trilam. Sleeping Bag Cover
As Low As (Save Up to 19%)
$69.49
See all 3 models
Newly Added
Sea to Summit Ultralight Ion 5 Air Mat
Sea to Summit Ultralight Ion 5 Air Mat
As Low As
$179.95
See all 3 models
Next

Outdoor Essentials

1–60 / 60
Previous
Best Rated
Olight Odin Mini 1250 Lumens LED Rechargeable Flashlight
Olight Odin Mini 1250 Lumens LED Rechargeable Flashlight
(49)
List: $167.94 (Save 17%)
$139.95
See all 2 models
Yeti V-Series Cooler, Stainless Steel, 11055020000
Yeti V-Series Cooler, Stainless Steel, 11055020000
(1)
$800.00
Free 2 Day Shipping
Spyderco Sage 5 3in Folding Knife
Spyderco Sage 5 3in Folding Knife
(1)
As Low As (Save 25%)
$171.00
See all 3 models
Black Diamond Distance 1500 Headlamp, Octane, One Size, BD6206948001ALL1
Black Diamond Distance 1500 Headlamp, Octane, One Size, BD6206948001ALL1
$249.95
Blazin' Deal
Yeti Tundra 75 Quart Hard Cooler
Yeti Tundra 75 Quart Hard Cooler
As Low As (Save Up to 12%)
$445.49
See all 2 models
Medford Pram T Framelock Folding Knife, 3.25in Black Pvd Coated S35Vn SS Tanto Blade, Black Pvd Coated Titanium Handle, Thumb Stud, Pocket Clip, Water Tight Storage Case, MD029SPT-30PV-SSCS-BN
Medford Pram T Framelock Folding Knife, 3.25in Black Pvd Coated S35Vn SS Tanto Blade, Black Pvd Coated Titanium Handle, Thumb Stud, Pocket Clip, Water Tight Storage Case, MD029SPT-30PV-SSCS-BN
List: $1,011.95 (Save 22%)
$790.00
Blazin' Deal
Yeti Hopper Flip 18 Quart Soft Cooler
Yeti Hopper Flip 18 Quart Soft Cooler
As Low As (Save Up to 38%)
$186.49
See all 19 models
Snow Peak GigaPower Lantern, Auto, One Size, GL-100AR
Snow Peak GigaPower Lantern, Auto, One Size, GL-100AR
$86.95
Free 2 Day Shipping
Leatherman ARC 2.76in Multi-Tool
Leatherman ARC 2.76in Multi-Tool
(1)
$249.95
See all 1 models
Snow Peak Titanium Kanpai Bottle, 350 ml, TW-180
Snow Peak Titanium Kanpai Bottle, 350 ml, TW-180
List: $184.95 (Save 19%)
$149.95
Blazin' Deal
Yeti Rambler 2.0 Jug
Yeti Rambler 2.0 Jug
As Low As (Save Up to 10%)
$117.00
See all 9 models
Blazin' Deal
Browning Range Tool, Silver, 3220479
Browning Range Tool, Silver, 3220479
List: $35.49 (Save 52%)
$16.87
Best Rated
Predator Tactics Lantern Headlamp Kit
Predator Tactics Lantern Headlamp Kit
(8)
List: $109.95 (Save $10.00)
$99.95
See all 2 models
Backpacker's Pantry Backcountry Meal Bucket - 1 Serving, 1094899
Backpacker's Pantry Backcountry Meal Bucket - 1 Serving, 1094899
$139.99
8% Bonus Bucks
Pulsar Battery Pack APS 2, Black, PL79162
Pulsar Battery Pack APS 2, Black, PL79162
(1)
List: $95.99 (Save 17%)
$79.97
Snow Peak Mini Hozuki Lanterns
Snow Peak Mini Hozuki Lanterns
$49.95
See all 3 models
Blazin' Deal
ReadyWise Emergency Freeze Dried Powdered Eggs, 144 Servings, RW05-516
ReadyWise Emergency Freeze Dried Powdered Eggs, 144 Servings, RW05-516
List: $209.99 (Save 35%)
$137.49
MTN OPS Hydrate Drink Mix
MTN OPS Hydrate Drink Mix
As Low As (Save Up to 33%)
$1.99
See all 7 models
Blue Force Gear Helium Whisper Trauma Kit Pro Supplies
Blue Force Gear Helium Whisper Trauma Kit Pro Supplies
List: $261.99 (Save Up to $17.04)
$244.95
See all 3 models
On Sale
Power Mountain 15 Can Soft Cooler, Gray, 80080
Power Mountain 15 Can Soft Cooler, Gray, 80080
List: $147.99 (Save 20%)
$117.99
10% Coupon
MTN OPS Ignite Energy Drink
MTN OPS Ignite Energy Drink
As Low As (Save Up to 23%)
$1.99
See all 13 models
Voodoo Tactical L.I.F.E. Pack, Intermediate, 10-9112000000
Voodoo Tactical L.I.F.E. Pack, Intermediate, 10-9112000000
(1)
List: $129.95 (Save 15%)
$110.95
Newly Added
MTN OPS Performance Protein Bar
MTN OPS Performance Protein Bar
$2.99
See all 3 models
Nitecore EMR25 Multipurpose Ultrasonic Mosquito Repeller, Black, 6952506490097
Nitecore EMR25 Multipurpose Ultrasonic Mosquito Repeller, Black, 6952506490097
$84.95
Ben's 30 Spray Carded
Ben's 30 Spray Carded
As Low As
$5.99
See all 3 models
Hawk Gazer FLG-7 LED Flashlight/Green Laser Combo, Black, Low Profile, LG-HG-FLG-7
Hawk Gazer FLG-7 LED Flashlight/Green Laser Combo, Black, Low Profile, LG-HG-FLG-7
(10)
List: $119.99 (Save 17%)
$100.00
Carson MagniFlash 11x Magnifier Loupe, White CP-40
Carson MagniFlash 11x Magnifier Loupe, White CP-40
List: $53.00 (Save 32%)
$35.99
Newly Added
MTN OPS Ignite Powder
MTN OPS Ignite Powder
As Low As (Save Up to 32%)
$44.95
See all 5 models
Carson Adventure Pak Binoculars, 5x30mm, Roof Prism, Matte Green, HU-401
Carson Adventure Pak Binoculars, 5x30mm, Roof Prism, Matte Green, HU-401
(2)
List: $40.00 (Save 16%)
$33.49
Sea to Summit Ultra-Fine Mesh Headnet, Black, 142
Sea to Summit Ultra-Fine Mesh Headnet, Black, 142
List: $17.95 (Save 25%)
$13.46
UST Spork Stainless Steel Multi-Tool
UST Spork Stainless Steel Multi-Tool
List: $8.94 (Save Up to 52%)
$4.99
See all 2 models
Best Rated
Streamlight TLR-2G LED Rail-Mounted Tactical Light, CR123A, Green/White, 300 Lumens, Black, 69250
Streamlight TLR-2G LED Rail-Mounted Tactical Light, CR123A, Green/White, 300 Lumens, Black, 69250
(45)
List: $771.22 (Save 46%)
$414.49
Stansport Emergency Food Bars - 3600 Calories, Blue, 3.75"L x 2.5"W x 4.75"H, 366
Stansport Emergency Food Bars - 3600 Calories, Blue, 3.75"L x 2.5"W x 4.75"H, 366
(2)
List: $26.39 (Save 28%)
$18.99
Outdoor Edge Cutlery Flip N' Zip Saw - 4.5in Blade, Orange FW-45
Outdoor Edge Cutlery Flip N' Zip Saw - 4.5in Blade, Orange FW-45
(2)
List: $40.85 (Save 22%)
$31.99
ReadyWise Trail Treats Cookie Dough Snacks
ReadyWise Trail Treats Cookie Dough Snacks
As Low As (Save Up to 43%)
$7.99
See all 2 models
Newly Added
MTN OPS Big Meat Stick
MTN OPS Big Meat Stick
List: $3.99 (Save 12%)
$3.50
See all 3 models
SureFire TURBO Series 18350/123 Everyday Carry Dual-Output LED Flashlight
SureFire TURBO Series 18350/123 Everyday Carry Dual-Output LED Flashlight
(4)
List: $279.00
Add to Cart for Your
Special Price
See all 3 models
Free 2 Day Shipping
Spyderco Bodacious 3.63in Folding Knife
Spyderco Bodacious 3.63in Folding Knife
As Low As (Save 25%)
$236.25
See all 2 models
Blazin' Deal
Yeti Tundra 125 Quart Hard Cooler
Yeti Tundra 125 Quart Hard Cooler
As Low As (Save Up to $39.50)
$586.49
See all 2 models
Blazin' Deal
Yeti Hopper Flip 12 Quart Soft Cooler
Yeti Hopper Flip 12 Quart Soft Cooler
(1)
As Low As (Save Up to 20%)
$175.00
See all 20 models
Blazin' Deal
Leatherman Wave Plus
Leatherman Wave Plus
(6)
As Low As (Save Up to 19%)
$123.49
See all 3 models
Free 2 Day Shipping
Snow Peak Round Titanium Flask, 150ml
Snow Peak Round Titanium Flask, 150ml
(1)
As Low As
$194.95
See all 2 models
Black Diamond Cosmo 350-R Headlamp
Black Diamond Cosmo 350-R Headlamp
(1)
$59.95
See all 2 models
Star-Batt Plus Power Pack
Star-Batt Plus Power Pack
List: $1,699.00 (Save 12%)
$1,499.00
See all 2 models
Best Rated
SureFire PLR-C Stiletto Pro II Rechargeable Pocket Light, Multi-Output, 1500 Lumens, Dual 14mm High-Candela Reflectors, Black, PLR-C
SureFire PLR-C Stiletto Pro II Rechargeable Pocket Light, Multi-Output, 1500 Lumens, Dual 14mm High-Candela Reflectors, Black, PLR-C
(12)
List: $409.00
Add to Cart for Your
Special Price
Star-Batt Solar Panel, Black, SBS-03
Star-Batt Solar Panel, Black, SBS-03
(1)
$599.00
Carson MiniBrite 5x Magnifying Loupe Glass
Carson MiniBrite 5x Magnifying Loupe Glass
(1)
As Low As (Save Up to 35%)
$14.99
See all 2 models
Omeals Vegetable Stew with Beef
Omeals Vegetable Stew with Beef
$11.49
See all 1 models
Ben's InvisiNet Bug Jacket & Mitts
Ben's InvisiNet Bug Jacket & Mitts
$41.99
See all 2 models
VISM Vertical Grip w/Strobe Flashlight & Red Laser - Gen2, 200 Lumens VAQVGFLRV2
VISM Vertical Grip w/Strobe Flashlight & Red Laser - Gen2, 200 Lumens VAQVGFLRV2
(6)
List: $133.99 (Save 19%)
$108.99
Newly Added
MTN OPS Hydrate Drinks
MTN OPS Hydrate Drinks
$29.95
See all 6 models
Zippo Lighter and Knife Set, 1.44" x 2.25", 49391
Zippo Lighter and Knife Set, 1.44" x 2.25", 49391
List: $61.95 (Save 15%)
$52.66
Star-Batt Mini Power Pack
Star-Batt Mini Power Pack
(1)
List: $1,099.00 (Save $100.00)
$999.00
See all 3 models
LEM Products Jerky-Board And Knife, 616
LEM Products Jerky-Board And Knife, 616
$47.89
TOPEAK Mini P20 MultiTool, 60102582B
TOPEAK Mini P20 MultiTool, 60102582B
$59.95
Rothco Tactical Pen and Flashlight, 5423
Rothco Tactical Pen and Flashlight, 5423
List: $35.99 (Save 28%)
$25.99
Maglite 2 Cell Aa Mini Magliteled W/ho 459-SP2209H, Unit EA
Maglite 2 Cell Aa Mini Magliteled W/ho 459-SP2209H, Unit EA
List: $149.99 (Save 11%)
$133.99
EMI Starburst, Blue - 864
EMI Starburst, Blue - 864
$169.99
Tops Knives A.L.R.T. w/Light TKALRT-01
Tops Knives A.L.R.T. w/Light TKALRT-01
List: $119.95 (Save 25%)
$89.79
EMI Flashback Controller, Green/Red 3030
EMI Flashback Controller, Green/Red 3030
List: $76.75 (Save $2.76)
$73.99
Next

Related Products to Sea to Summit Basecamp BT 3 Sleeping Bag Synthetic

Image of Sea to Summit Detour Stainless Steel Collapsible Pot 2 models Sea to Summit Detour Stainless Steel Collapsible Pot As Low As (Save 25%) $83.96 On Sale
Image of Sea to Summit Escapist Evo Tarp 2 models Sea to Summit Escapist Evo Tarp As Low As (Save 20%) $160.00 On Sale
Image of Sea to Summit Frontier UL Two Pot Set, 2 Piece Sea to Summit Frontier UL Two Pot Set, 2 Piece List: $124.95 (Save 25%) $93.71
Image of Sea to Summit Detour Essentials Camp Kitchen Kit Multi, 4 Piece Sea to Summit Detour Essentials Camp Kitchen Kit Multi, 4 Piece List: $168.95 (Save 25%) $126.71
Image of Sea to Summit Detour Stainless Steel Collapsible Pouring Pot Sea to Summit Detour Stainless Steel Collapsible Pouring Pot List: $100.95 (Save 20%) $80.76
Image of Sea to Summit Spark Pro Down Sleeping Bag 4 models Sea to Summit Spark Pro Down Sleeping Bag As Low As (Save 25%) $411.75
Image of Sea to Summit Spark Pro Down Sleeping Bag 4 models Sea to Summit Spark Pro Down Sleeping Bag As Low As (Save 25%) $411.75
Image of Sea to Summit Ember Down Quilt 2 models Sea to Summit Ember Down Quilt As Low As (Save Up to 25%) $310.50
Image of Sea to Summit Detour Stainless Steel Cutlery Set, 1P, 3 Piece Sea to Summit Detour Stainless Steel Cutlery Set, 1P, 3 Piece List: $38.95 (Save 25%) $29.21 On Sale
Image of Sea to Summit Lightweight 35L Compression Sack Sea to Summit Lightweight 35L Compression Sack List: $49.95 (Save 25%) $37.46
Image of Sea to Summit Frontier UL 1.3L One Pot Cook Set - 3 Piece/1 Person Sea to Summit Frontier UL 1.3L One Pot Cook Set - 3 Piece/1 Person List: $82.95 (Save 25%) $62.21
Image of Sea to Summit Detour Stainless Steel Paring Knife Sea to Summit Detour Stainless Steel Paring Knife List: $27.95 (Save 25%) $20.96
Image of Sea to Summit Detour Stainless Steel Kettle Cook Set Multi, 2P, 3 Piece Sea to Summit Detour Stainless Steel Kettle Cook Set Multi, 2P, 3 Piece List: $100.95 (Save 20%) $80.76
Image of Sea to Summit Frontier UL 2L One Pot Cook Set - 3 Piece/1 Person Sea to Summit Frontier UL 2L One Pot Cook Set - 3 Piece/1 Person $103.95
Image of Sea to Summit Frontier UL Collapsible 1L Pot Sea to Summit Frontier UL Collapsible 1L Pot List: $77.95 (Save 25%) $58.46
Image of Sea to Summit Frontier UL Pan Sea to Summit Frontier UL Pan List: $72.95 (Save 25%) $54.71 On Sale
Image of Sea to Summit Basecamp Down Sleeping Bag Sea to Summit Basecamp Down Sleeping Bag List: $414.00 (Save 25%) $310.50
Image of Sea to Summit Basecamp Down Sleeping Bag Sea to Summit Basecamp Down Sleeping Bag List: $414.00 (Save 25%) $310.50
Image of Sea to Summit Frontier UL Collapsible Kettle Cook Set - 3 Piece/1 Person Sea to Summit Frontier UL Collapsible Kettle Cook Set - 3 Piece/1 Person List: $94.95 (Save 25%) $71.21 On Sale
Image of Sea to Summit Frontier UL Collapsible Pouring Pot Sea to Summit Frontier UL Collapsible Pouring Pot List: $82.95 (Save 25%) $62.21
Image of Sea to Summit Detour Stainless Steel Cutlery Set, 2P, 6 Piece Sea to Summit Detour Stainless Steel Cutlery Set, 2P, 6 Piece List: $69.95 (Save 25%) $52.46
Image of Sea to Summit Telos TR3 Lightfoot Footprint Sea to Summit Telos TR3 Lightfoot Footprint List: $50.95 (Save 25%) $38.21
Image of Sea to Summit Frontier UL Collapsible Kettle Cook Set - 3 Piece/2 Person Sea to Summit Frontier UL Collapsible Kettle Cook Set - 3 Piece/2 Person List: $87.95 (Save 25%) $65.96 On Sale
Image of Sea to Summit Trek & Travel Pocket Hand Wash Sea to Summit Trek & Travel Pocket Hand Wash $6.95

Sea to Summit Basecamp BT 3 Sleeping Bag Synthetic Unavailable & Discontinued Models

List of Unorderable Models

  • Sea to Summit Basecamp Thermolite BT 3 (Synthetic)-Red-Large , MPN: 097L , UPC: 9327868052127 , Code: Z02-SI-STS0210-276365
  • Sea to Summit Basecamp Thermolite BT 3 (Synthetic)-Red-Regular , MPN: 097R , UPC: 9327868052110 , Code: Z02-SI-STS0210-276371
Compare (0)
1 item has been added
Add at least two items to compare
Last updated 2026-09-24 UTC.