Made with lightweight 30D Ultra-Sil instead of traditional 70D nylon, the Ultra-Sil Compression Dry Sacks are roughly half the weight—but still offer all the clever functionality—of the original Sea to Summit Compression Dry Sacks.

• Compresses gear to one-third the volume while also keeping it dry
• Waterproof seams are double stitched and fully tape sealed
• Waterproof and air-permeable eVent fabric allows air to be compressed out, and won’t let water in
• Roll-top Hypalon closure with lid and four straps for even compression; Hypalon closure does not wick moisture
• Reinforced stitching on all stress points ensures long-lasting durability
• Maximum volume: 20 L
• Minimum volume: 6.7 L