The optech usa snoot boot wb large black is a lens pouch that is cylindrical just like a lens it is designed to fit a wide body camera lens the wide mouth opening makes it easy to retrieve a lens while the drawstring closure secures it tightly with a spring lock it can be attached to a belt or a d ring of a photo vest so that its always available this pouch is made in the usa protects most lenses against dust moisture impact cylindrical design for better fit