Brand: ROCKBROS Size: about 13.5*8cm Material: fabric/fabric Position: front Product type: bottle holder Color: black 1L LARGE CAPACITY: The bicycle water bottle bag has a capacity of 1L, which is large enough to store water bottles (the diameter of the water bottle is less than 2.75 inches), tools, keys and other bicycle accessories. There is also an elastic pocket to put your phone. MULTIPLE STABLE INSTALLATIONS: This bicycle storage bag uses a multi-position installation design, which can be installed not only on the handlebar, but also on the bicycle frame and under the bicycle saddle. In addition, it comes with 5 adjustable straps and can be used according to different locations. The adjustable elastic buckle makes it more stable even on bumpy roads. INSULATED AND DURABLE: ROCKBROS Stem Bag made of 210D+PE cotton lining, which is insulated to keep your drinks cool in hot summer. The outside of the bag is made of 500D film material, which is very durable. ULTRA LIGHTWEIGHT: At only about 50g, our bag is so lightweight. And you won't feel any burden when riding. It attaches to your bike handlebar and stem, allowing you to quickly and easily access snacks and water bottles. HUMANIZED DESIGN: ①Large area reflective strip design to warn passing people and vehicles and make you safer at night,②Printed with ROCKBROS LOGO on the water bottle holder bag, fashion and quality assurance.