A very low-profile hydration system using a slide on locking mechanism. Made from lightweight and soft material this is ideal for ultralight backpackers who prefer bladders to bottles. Utilises dual walls and foam insulation to keep your drink cold. Hydrapak says New: the first insulated reservoir on the market. An insulated version of our lightweight Velocity 1.5L reservoir, the Velocity IT 1.5L features our new IsoBound technology. Engineered to keep fluids at an ideal temperature 38% longer than a standard reservoir. The four-layer design provides users with more stability, an enhanced grip, and a no-sweat, comfortable carrying experience without sacrificing the simplicity. Preventing heat transfer from the user to the hydration, it is the ideal solution for a wide range of outdoor endurance activities. Our Verdict Hydrapak’s Velocity IT uses the sliding lock mechanism that a few other brands have used in the past to close the bladder after filling. It’s a bit fiddly, but most methods of closing up hydration bladders are to be honest. What stands out with the Hydrapak version is the quality of the product and the materials used. The insulation works brilliantly and doesn’t add much bulk to the bladder. – Reviewed by Ultralight Outdoor Gear Features IsoBound Technology keeps water at an ideal temperature 38% longer. The double-wall construction and open cell foam technology create a barrier slowing the heat transfer from the user to the hydration. Ergonomic Slide-Seal top designed with no sharp edges, opens wide for fast filling and closes tight for a leakproof seal Dual FlexGrips make it simple to fill, carry and access in your pack Flexible 36\

A very low-profile hydration system using a slide on locking mechanism. Made from lightweight and soft material this is ideal for ultralight backpackers who prefer bladders to bottles. Utilises dual walls and foam insula