ROCKBROS Bike Saddle Bag Rear Under Seat Storage with Water Bottle Pockets Holder Waterproof Reflective Mountain Road MTB Pack

LARGE CAPACITY: 1L volume. And there are compartments inside and also a pocket on the outside to hold the water bottle. The bike seat bag has enough room to carry the essentials like energy bars, repair tube, patch kit, chain lube, tire levers, mini pump, keys, etc. (Water Bottle is not included.) 100% WATERPROOF: ROCKBROS Bike Saddle bag is made of carbon microfiber, which is waterproof, scratch-resistant, easy-cleaning and durable. And the rubberized zipper also could keep your items dry in the rainy day. REFLECTIVE: With a tail light buckle and reflective design elements, you could hang a taillight on the bag which extremely increase your safety when driving at night. EASY TO INSTALL: Hook and loop design makes the bag fix firmly with the bicycle saddle and the bag can be quickly and easily assembled and taken off. COMPATIBILITY: The rear pannier bag is suitable for most bicycles whose seatpost height is greater than 25cm like small E-bikes, Unicycles, Electric Scooters, Water bikes, Road bikes, Mountain bikes, Folding Bikes, etc.