Elite CEO Bicycle Water Bottle Cage/Corsetta Bottle Kit Narrow 66 mm diameter makes the corsetta easier for small hands to grip and once back in the cage it is less likely to interfere with pedaling when riding, important for those with Narrow hips Resin CEO cage is made in Italy and based on the UCI world Tour proven custom race, just because it's smaller doesn't mean performance should be sacrificed Corsetta bottle has 350 ml capacity, is dishwasher safe and BPA free