These surplus gas mask bags originally held a British S10 gas mask. Though they're empty now, they still make great pouches with a roomy primary pocket and twin side pockets. Each pouch is made from heavy duty DPM pattern fabric and has a hook and loop closure with a metal snap. An adjustable waist belt and shoulder strap is included. Gas mask is NOT included. Outside dimensions measure 11.5x10.5x4.5"