Ultra-Sil NANO Dry Sack - 4L 0.12-0.24 in / 3.1-6.1 mm skiing and much more

skiing and much more

This Pelican 1550 Case with O-ring seal and Easy open Double Throw latches is watertight

A double layer tough Mylar bladder holds your water (or wine) safely and the unit can be easily operated with one hand

flat knit toe seam and a waffle knit flex zone

Quality paper for all-round use

Ultra-Sil NANO Dry Sack - 4L 0.12-0.24 in / 3.1-6.1 mm skiing and much moreIn the age of ultra lightweight everything Sea to Summit has developed a range of ultra lightweight dry sacks to save those crucial few grams. Using a 15 denier Sil PU nylon fabric they call Ultra Sil Nano, a lightweight side release buckle and a thinner roll top closure they have created a dry sack that is 30% lighter than their standard 30 D Ultra Sil Dry Sacks.