Nagene's 32 oz Wide Mouth Canteen is constructed of a multi-layered material that offers stiffness and strength for stand-up capability, yet is soft and flexible to be folded or rolled. This soft sided bottle's wide mouth opening accepts ice cubes and provides easy access for cleaning. It also accommodates all major water filters. Nalgene guaranteed leakproof system with aloop-top cap. Capacity: 32 oz.