<b>Outdoor sports need to be replenished moisture at any time. <br></b> SO,Must Make Sure You Have a Leak-Free and Lightweight Backpack to Storage of drinking water. When<br> going on your run, hike,cycling or other outdoor sports, you want to make sure you have enough water for <br>the day. You need a daypack back that does not leak and also meanwhile has enough volume to take your <br>belonging safely along with you. <br> <b>The Baen Sendi Hydration Pack Gives you 70 Oz. Guaranteed Enough Hydration for Your Outdoor Sports.<br></b> <br> <b>Lightweight & Enough Volume<br></b> Backpack with 3 storage compartments and zippers on sides.<br> Front pocket big enough for essentials or snacks. <br> Middle pocket for clothes and the main compartment where you could put a towel alongside the hydration bladder itself. <br> <br> <b>Water Resistant & Durable<br></b> The main compartment is covered with Nylon material which serves two functions. <br> 1. It is water resistant so your belongings stay dry in light/medium rain. <br> 2. It is also durable reduces wear and tear so your pack lasts longer.<br> <br> <b>Adjustable shoulder/chest /waist straps<br></b> It fit chest sizes from teenagers/kids with 27" up to adults (men & women) with 50" chest size. The chest <br>straps and waist straps prevents bounce from exercising .<br>