This Hard Shell Bag is made from water resistant EVA to keep your items dry in rainy days. The space inside is divided into multiple pockets, which easy to organize and find your items. It works well with your water bottle cage to store accessories such as sunglasses, mini pump, keys, tools, and more. Feature - Color: As shown. - Material: EVA. - Size: 18x7.5x7.5cm. - CREATIVE BOTTLE SHAPE DESIGN: Innovative bottle shape design,makes this item unique to other bags,making you stand out from others during your ride. - WATERPROOF DESIGN:Made from waterproof material with a rainproof zipper,you can enjoy cycling in light rain and feel at ease.NOT recommended for long rides in heavy rain. - SEALED ZIPPER: Strong zipper,will hold and protect your biking accessories. - EASY INSTALLATION:Convenient and easily set up on the water tank cage(not included) Wherever you go you can carry it easily if needed and,diameter measurements is in accordance with standard water bottles. Package list: 1 x Hard Shell Bag