The Zefal Wiiz bottle cage makes hydration in the saddle easy. The bottle cage will fit all types of frames and is easily bolted on to existing cage bolts. You can also mount it so you can take your bottle from the left or right hand side. Side entry bottle cages are great on compact frames where space is at a premium. The Zefal Wiiz bottle cage is made of resistant and elastic thermoplastic resin which is strong, durable but lightweight at only 65g. Key Features: Reversibility For right-hander or left-hander. Easier Access Easy exit of the bottle on the sides, even on small frames. Tech Spec: Material: Thermoplastic resinColours: Black, WhiteWeight: 65g