The nalgene neoprene insulated bottle carrier is an insulated cover that provides perfect protection for wide mouth nalgene 1 litre bottles the draw cord toggle ensures the bottles stays snug inside the carrier is versatile keeping you drink warmer for longer in cold weather and colder for longer in hot weather perfect for those hot days in the saddle keeping yourself hydrated is important with a lovely cool drink of water that is just the thing you need the neoprene also slows freezing o