The Ultra-Sil Nano Shopping Bag is a super lightweight, strong and compact reusable bag that packs down to the size of a golf ball. Constructed using lightweight 15 denier siliconized nylon, its generous 25L capacity is reinforced by bar-tacks at the stress points, so it could support a load of up to 45 lbs / 20kg. The tiny packed size also clips easily onto a key ring, a carabiner, or it can also tuck into a purse or a jacket pocket, so it's never out of reach.