The Hydro Flask 18oz Standard Mouth Insulated Bottle With Standard Flex Cap makes beverage transportation reliable and sweat-free. Double wall vacuum-Insulation serves as a barrier to heat transer so your coffee or tea will stay hotter for longer and your iced drinks will stay icy all day long. The insulated Flex Cap makes it easy to handle on the move, and you can carry it around with your Pinky if need be. Just the right size for most mesh pockets, cupholders and hands. Features of the Hydro Flask 18oz Standard Mouth Insulated Bottle With Standard Flex Cap Smaller convenient size Insulated Flex Cap for easy-carry comfort and ultimate portability Ideal for kids TempShield Protected 18/8 Pro Grade Stainless Steel BPA-Free Durable, sweat-free powder coat finish