The Ultra 15 Unisex Backpack scores high as a compressible, roomy, comfortable companion for trail running over long distances. This light running packs with a volume of 15 liters was designed specifically with challenging ultra runs in mind. It offers an impressive number of pockets so your gear is always within easy reach and organized on trail runs. Intelligent features, an athletic fit and super breathability transform this pack into the perfect companion for (ultra-) long days on the trail. The shoulder straps are anatomically shaped to adapt to your back and shoulders for a great fit without slipping. The simple, proven closure system on the pack allows for quick on-and-off so runners do not lose valuable time underway. The Ultra 15 Backpack is rounded out with smart details such as a waterproof pocket for things that can’t get wet, reflective print for better visibility, and pole attachments. Ultra 15 Backpack – Lightweight, surprisingly roomy.