The entire cooler goes in your freezer overnight (12 hours) to activate its built-in freezable gel

beer bottle or non-alcoholic drink for hours on the go

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So you can push farther than you thought possible

Castelli Free Women's Tri ITU Suit Size:L The entire cooler goes inWe made this suit to be compliant with ITU rules but with the fabrics, aerodynamics and cargo carrying capacity to be ideal for longer races as well. It has the fabrics, the pockets and the KISS Tri seat pad of our Free long distance race suits to offer exceptional performance in a wide variety of races. SpeedFreak ventilated race fabric on front of upper portion Velocity mesh back gives wind tunnel proven speed on the bike Rear 30cm YKK Camlock