An essential for any serious mountain biker, the Henty Enduro 2.0 is the pinnacle of hydration kits. Designed to fit snugly to your center of gravity, it features a clever ventilation system that massively cools the back, webbing to which you can attach extra essentials and a rear extension meaning it can fit more body shapes. The three-liter reservoir incorporates a 48-inch hose and blaster valve.