This is Quadruple Bay 18650 battery silicone case, protect your battery from short circuiting and other hazards. Light weight and compact size to better organize your batteries and take them easily while traveling. Made of high quality food grade silicone. Store up and protect your 18650 batteries. Protect 18650 battery from falls, bumps and short circuit. Name: H¨¹lle Brand Coil Master Material Silicone Model 18650 Battery Bay 4 Size 80 x 20 x 67mm