This compression bag is meant to be used with the US modular sleeping bag but can carry other stuff as well. This is one big compression sack.

These are pretty roomy, should fit just about any sleeping bag you'd think of. A plethora of compression straps to compress the contents to whatever shape you want. Made of ripstop-reinforced nylon fabric, slightly water resistant but not waterproof.

Condition

Used US military surplus. In serviceable condition, everything works as it should.