This product is made of quality ABS material, greatly improves the service life, ensuring the stability and durability of this water cup holder, without deformation. Easy to install and use, the can be firmly installed on the stroller, shopping cart, bike, scooter. Features -Color:Black -Material:ABS -Size:15.50X10.50X6.50cm/6.09X4.13X2.55in -Note: Suitable for 2-4.5cm diameter -No matter what kind of bike, can always find the excellent place to firmly mount this product . -The product can mount your bottle handy on your stroller while shopping, dating. -Can adjust the size of the round mouth freely, suitable for bikes, scooter handlebar, strollers, mic stand, shopping carts. -Easily removable, simply open the hook, clip over the stroller handle and can put your cup on the holder. -No matter what the , it will firmly grip your handlebar and stay stable without shaking. Package list: 2 Holders