Details No matter how fast or far you're running, the Nathan Pinnacle 12 Liter Hydration Race Vest is built to keep you at the top of your game. Designed to be 20% lighter and more breathable than the Krar and Howe vests, the Pinnacle series fits like a second-skin and adds two new kangaroo pockets (allowing side or vertical entry and odd-sized items like trekking poles) to the collection of smart storage space, as well as two water-resistant pockets on the chest and a pill pocket complete with whistle. This vest is lightweight, breathable and features tapered back panels to keep the moisture out while you're moving in total comfort. Its new enhanced shape boasts a slightly longer back for efficient, dispersed capacity, and a diagonal zipper allows even easier access to whatever you need fast. With just the right chafe-free fit and form, it's the perfect race day vest! Material 85% Polyester + 4% Spandex + 8% Nylon + 2% Rubber Wire BPA Free Volume 12L / 732.2 Cu. In Size 16 x 16 x 4 in Unisex sizing to fit all body types Details 20% lighter than the Howe and Krar 13 Exterior Pockets Two water-resistant pockets on chest for phone and pill pocket with whistle Added side pockets New Kangaroo pockets: one side entry easy access pocket. One vertical pocket for trekking poles, larger items New Shape of vest that sits longer in the back for dispersed capacity Large diagonal zipper for easy entry for necessities of any size that fits Tapered back panels for a chimney wicking effect, designed to wick moisture up and out of sweaty locations. Insulated 1.6L Hourglass bladder Weight 11oz / 312g Nathan Pinnacle 12 Liter Hydration Race Vest