This fully adjustable bounce free two flask hydration belt now includes a larger storage pocket to hold all of your running essentials and smartphones up to iphone 6 plus features two 10oz300ml flasks with push pull caps ergo shaped soft monofilament belt offers multi directional stretch that eliminates bounce large zip pocket with key ring clip and front stash pouch for running essentials fits up to iphone 6 plus two shock cords with one pull tension locks for extra capacity