Enjoy free shipping during the holidays! 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 Extended FREE RETURNS
We want to ensure that making a return is as easy as possible! With our Hassle-Free, Extended
Holiday Returns, eligible orders placed from November 12, 2025 on will benefit from an extended
return deadline (January 13, 2026 or 30 days after receipt of your order - whichever is later).
We'll even cover the cost of return shipping. Learn more about our
Return Policy.
Please Enable Your Browser's Cookies Functionality
Cookies are not currently enabled in your browser, and due to this the functionality of our site will be severely restricted.
Web browser based cookies allow us to customize our site for you, save items in your cart,
and provide you with a great experience when shopping OpticsPlanet.
Your privacy is important to us, and any personal information you supply to us is kept strictly confidential.
If you cannot enable cookies in your browser, please contact us — we are always here to help!
JavaScript is blocked by AdBlocker or ScriptBlocker
We're sorry - it looks like some elements of OpticsPlanet are being disabled by your AdBlocker.
Unfortunately we are unable to offer our excellent shopping experience without JavaScript.
Please add "opticsplanet.com" and "https://opl.0ps.us/assets-13d8e28af80/" to whitelist,
or disable AdBlocker for this site (please note that we do NOT feature any annoying ads on this website).
Thanks!
Your Browser is Outdated
Unfortunately, we are unable to provide an excellent shopping experience on your browser because it lacks modern functionality needed for us
to provide a fast, secure, and enjoyable experience. If you cannot upgrade your browser or use an alternative device to visit us,
please contact us at +1-800-504-5897 and we'll be happy to assist you over the phone!
Sea to Summit Spark Sp II Sleeping Bag 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 Spark Sp II Sleeping Bag
Light in weight but heavy in features, the Spark Series of down sleeping bags are for the ultralight, gram counting adventurer. The SpI is ideal in summer, SpII will take you through cool summer to fall, and the SpIII is perfect for spring, summer and mild winter adventures. Filled with 850+ loft RDS certified ULTRADRY Downand employing an ultra-light 10D Nylon Shell, 1/2 #3 YKK side zipper and narrow cut, the Spark bags are highly compressible and incredibly light. The Spark SpI packs to the size of a grapefruit making these the perfect option for any ultra-light or minimalist adventures.
Features of Sea to Summit Spark Sp II Sleeping Bag
RDS ULTRA-DRY Down 850+ Loft 90% Down Cluster Premium Goose Down
Shell: 10D UL Nylon
Liner: 15D Nylon soft touch, high-density weave
1/2 length YKK #3 zipper (Sp II and Sp III have a draft tube)
Sp I: Sewn-through construction. Sp II: Box-wall baffle construction in the torso, sewn through in the leg area. Sp III: Box-wall baffle construction throughout
Anatomically tapered foot box
Includes lightweight Ultra-Sil Nano compression bag and a combined storage cell/laundry bag