The Amphipod Hydraform Thermal-Lite? has all the benefits of the classic Hydraform? Handheld with added low-profile insulation sleeve. Ergonomic design allows hand to relax. Breathable AirFlow mesh and ultra soft inner. Easily adjusts to fit any hand size. 12 oz. or 20 oz. bottle size. All Amphipod bottles are recycling symbol #4 LDPE and are BPA-free.12oz. ergonomically contoured insulated handheld bottle with pocket Great combination for hot and cold weather use Comfortable, fully-cushioned breathable slotted design Insulator is easily removable for maximum use versatility and washing 40% flatter Hydraform? bottle eliminates hand cramping tension Expandable zipper pouch pocket for iPod, phone, nutrition, keys and more Sizes: S: 12 oz. L: 20 oz. Weight: 4.3 oz.