USWE 101018 Bladder Insulator Sleeve

I went on a 2 hours from Ocala Fl to Kissimmee Fl and then 4 hours round trip ride from Kissimmee FL to the St Johns River FL on a sweltering 96 degree day in July. I filled the water bladder and stuck it in my freezer the night before my ride. I slipped the water bladder into this bladder insulator then into the Leatt back strap I use. The water slowly melted during the ride providing me with cold hydration the entire ride, I ran out of water two stop lights from the hotel where the ride ended. I was so glad I had this insulator, it worked to keep my water cold providing coolness to my back and refreshing cold water to drink, awesome product.