This pedal is not universal for all strollers. It can be used for children aged 3+ up to 20kg and has ridges for traction so your child can sit safely. Strollers without a horizontal shaft cannot be installed on this Step Board. The rear wheel of the stroller needs to have a horizontal axis. The length of the horizontal axis is greater than 23cm. The height of the horizontal axis from the ground is recommended to be 12-17cm. If the horizontal axis is too high or too low, it is not recommended to buy it, otherwise, the pedal will have a slope when installed, and the diameter of the horizontal axis should preferably not exceed 2.5cm, otherwise, the buckle of the pedal will not go in. The board features suspension, for a bump-free stroll, and when not in use it can be pushed up out of the way, or simply detached. Simple Operation: The stroller should be set up on a horizontal axis in the tube and the stroller rear structure prior to use. Double-layer lock piece lock cart, avoid loosening, a baby foot more secure. The seller guarantees: If there is any problem with the product, please contact us as soon as possible, we will guarantee a 100% refund, what are you hesitating, buy it now! Feature: The universal connector has endless adjustment position Simple, quick & easy adjustment No tools or extra adaptors required Suitable for ages 3-7 Weight rating of 25kg Note: 1. Do not use on rough roads and slopes 2. You need to install it 3.Not suitable for yoyo/yuyu/vovo. Specifications: Material: PP Plastic Size: 35*26cm/13.65*10.14 inch Package Include: 1 xToddler Standing Board