- Waterproof seams, double stitched and fully tape sealed
- Waterproof and air-permeable eVent ® fabric base
- Hypalon closure does not wick moisture
- Reinforced stitching on all stress points
- Air compresses out, water can’t get in
- Roughly half the weight of the original Compression Dry Sack
The Sea to Summit Ultra-Sil Compression Dry Bag is made from 30D Ultra-Sil and is a lighter version of the Sea to Summit Dry Bags. Sea to Summit has retained all the clever functionality of the original design with all the lightweight touches of the Ultra-Sil technology. The Ultra-Sil Compression Dry Sack compresses gear to one-third the volume while keeping it dry. All seams are waterproof, double stitched and fully tape sealed. These sacks feature a waterproof and air-permeable eVent fabric base with hypalon closure that does not wick moisture.