It is made of polyester material, durable and safe for use. This water with clip is very easy to install, giving you much convenience. This cup holder is suitable for placing bottles of different sizes, such as kettles, coffee cups, bottles, etc. Features -Color:Black -Material:Polyester -Size:18.00X13.00X7.00cm/7.07X5.11X2.75in -Universal and Adjustable: bike cup holder is equipped with clip that hold onto most handlebar, 360-degree adjustment to accommodate different orientations of rails and rods (vertical or horizontal). -Elastic Strap Design: The water with drawstring strap design, to avoid bottle falling off. You can store as much capacity as you need: You can store cell phones, keys, water bottle, etc. -Wide Compatibility: not only bike, but also can be used with scooters, walker and golfs cart. A nice and practical accessory for daily life and outdoor adventures. - workmanship: It is made of polyester material, which can be used for a long time. The perfect workmanship will give you an use experience. You can use it with confidence. -Intimate Gift: You can send this bike cup holder to your families and friends who like outdoor riding as a gift, they will be happy. A must-have for outdoor riding. Package list: 8 x Bike Cup Holders