Stay hydrated on the go with the Nathan Men's Hydration Pack. Featuring a sleek navy and red design, this pack is perfect for outdoor enthusiasts. size - Medium The Pinnacle is a lineup of extremely effective and efficient race packs from Nathan. They're designed around features that make them both more comfortable and more capable when it comes to racing with a pack. This Pinnacle 4L does not have a bladder though, and instead comes with 2 x 20oz soft flasks that fit neatly in reach on the front straps. A Seamless Fit The Pinnacle offers comfort and freedom of movement with a vest design. Its lightweight and breathable construction helps you stay cool and dry, while the tapered back panels effectively wick moisture up + out. With a slightly extended back, this vest distributes weight and capacity.  Smart Storage With two new Kangaroo pockets, the Pinnacle provides side entry access for quick and easy retrieval. Additionally, a vertical pocket offers ample space for larger essentials like trekking poles. The vest also features two water-resistant chest pockets, specifically designed for your phone and a pill pocket complete with a whistle for added safety. With a large diagonal zipper and generously sized pockets, accessing items such as extra layers, keys, and nutrition becomes a breeze.  Details: Two water-resistant pockets Added side pockets New Kangaroo pockets Tapered back panels for a chimney wicking effect 2 x 20z hydrapak Soft flask with ExoSpine Gear Capacity