USMC SealLine Sleep System Waterproof Compression Sack

Features

1. Genuine USMC Issue — Marine Corps contract item carrying NSN 8465-01-574-4003, built to military spec for field use.
2. Waterproof Construction — Heavy-duty coated fabric with stitchless welded seams keeps your sleep system dry through rain, snow, and brief submersion.
3. Sized for the 3-Season Sleep System — Engineered to swallow the USMC 3-Season Sleeping Bag and bivy cover, then compress them into a cylindrical load.
4. Dual Compression Straps — Two heavy webbing straps with quick-release buckles crush the load down to pack volume in seconds.
5. Hands-Free Air Purge Valve — One-way exhaust valve vents trapped air automatically as you cinch, eliminating the wrestling match most stuff sacks demand.
6. Smooth Interior and Exterior — Slick coated surfaces let bulky insulation slide in without snagging and let the loaded sack drop cleanly into the bottom of an ILBE or FILBE main pack.
7. Roll-Top Dry Bag Closure — Fold-and-clip roll-top seals out moisture before the compression straps go to work.
8. Approximate 20" x 20" Footprint — Compresses down to a manageable cylindrical shape that stows neatly in the bottom compartment of standard-issue rucksacks.
9. SealLine Manufactured — Built by SealLine, the same brand trusted by professional paddlers and expedition outfitters for serious waterproof storage.