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S3 Waterproof Dry Boxes are one of the best waterproof Waterproof Cases made in the United States. S-3 Waterproof Cases are virtually indestructible. S3 makes their Dry Boxes with the highest quality materials, whether it is the stainless steel hinge pins to prevent rust or the ABS covers to withstand impact. Some of the S3 Waterproof Cases, like S3 Waterproof Dry Protective Boxes T-6500 are foam lined to protect your valuables and have a silicone cord sealing surface to make your hard cases airtight. These Dry Boxes are perfect for cameras, laptops, and important documents.