Do not insert bottles with frozen contents. Temperature variations may cause water droplets to adhere to the surface. Place food in a container and not directly into the product.This product is not waterproof.Do not insert sharp or pointed objects.Do not fill with hot items or dry ice.Do not use if the size does not fit.Water, rubbing etc. may cause color to fade or transfer.Keep away from fire and other sources of heat.Do not use this product for purposes other than its intended purposes.