The Ultra-Sil Compression Dry Sack is a super lightweight dry sack designed to compress sleeping bags or bulky clothing and keep them dry. It is designed for use inside a pack or duffle bag – the featherweight fabric is not intended for external use. Made from Ultra-Sil 30D CORDURA® Nylon fabric with an eVent® fabric base, air can be squeezed out by tightening the compression straps, but the eVent fabric keeps water out.

It's an ideal part of a modular packing system: quality fabrics, taped seams a hypalon roll-top, non-wicking closure with a Field Repair buckle keep the Ultra-Sil Compression Dry Sack light and functional