Running belt with compartment adidas On race day, the little things can make a big difference at the finish. Like having your energy gels close at hand or a race number held securely in place. This lightweight running belt gives you all of that, plus reflective details for running in the dark. A sleek running belt with reflective details. Reinforced water bottle attachment. Woven loops for storing energy gels. Bag dimensions: 24 cm x 6 cm x 0.5 cm. Belt length: 90 cm. Mesh 80% polyester, 20% elastane. Running belt for running. Zipper closure.