The Ultra-Sil Shopping Bag is a small, reusable bag made of the same strong fabric we make our pack covers, compression sacks and stuff sacks from, so it's amazingly robust and durable. The stress points also have bar-tacked reinforced stitching so it can be filled to capacity week in, week out and still perform like new. And because the Ultra-Sil Shopping Bag is so compact and lightweight, you can stash it anywhere - it clips easily onto a key ring with the attached carabiner or it can tuck into a purse or a jacket pocket, so it's never out of reach. Features Ultra-Sil 30D siliconized CORDURA® fabric for strength and durability Bag has supported a 286 lb / 130kg load under test conditions Bar tacked and reinforced stitching at key stress points 30L capacity