Pet owners who keep their pets outside all year round know how difficult it is to keep the drinking water at the right temperature. In the winter it freezes & in the summer it gets too warm & the bacteria increases This thermal cover made from neoprene insulates the water bottle against high & low temperatures so you know that your pet will always have water which is safe to drink. Drawstring for adjusting & closing cover Made from neoprene Suitable for hot & cold weather Please note The freezing of water at extreme temperatures can not be entirely prevented by the thermal cover. Please regularly check your pet´s drink when exposed to prolonged periods of minus temperatures. Try out this classic drinking bottle as a perfect fit for the Neoprene Thermal Water Bottle Cover Classic Drinking Bottle.