Safety and environmental protectionHDPE environmental protection particles are adopted the material is environmentally friendly and the surface is finely polished to ensure that there are no edges and corners and it will not hurt the baby. Double stabilityUse triangular double A base design to increase the bottom contact area; water or sand can be injected into the bottom to increase the weight and it is not easy to be pushed down. Manufacturered by DD-upstep. Free height adjustmentfive levels of adjustable height height adjustment range: 65-137cm(3.1-5.5Ft). Best Customer ServiceDD-upstep has professional customer service. We provide after-sales service for 1 year during this period we will give corresponding solutions to your problems and help you solve them. Interactive football modeIn the process of running interactive goals you can exercise your baby's coordination and stimulate the flexibility of your feet.it promotes the baby's bone development and good physical fitness starts from the baby.