Hydraform Soft-Tech Insulluxe Handheld 16 oz Color:Black (1) synthetic upper material with a

synthetic upper material with a leather-like finish and soft backing

With the v5

TPU material

if you're wearing your KEENs daily

Gel packs are 9

Hydraform Soft-Tech Insulluxe Handheld 16 oz Color:Black (1) synthetic upper material with aPull the integrated strap on the sleeve to take up empty space and keep the flask performing as if it were full Refill to full capacity by pulling down on the base strap Includes a 16 fl. oz. Soft Tech flask with easy bite valve; the flask is BPA free and dishwasher safe Comfortable, integrated hand strap features loops for your thumb and forefinger to stabilize the flask while allowing your hand to relax Dual loops on the hand strap provide