First, they reduce the possibility of slipping off from the jumping mat on the trampoline. Although this is unlikely to happen with bare feet, slipping while wearing normal socks is common and can cause serious falls and accidents. Therefore, trampoline socks can help improve safety, especially for children.
Another major advantage of trampoline socks is that it is more hygienic than barefoot. If many people are using trampolines, bacteria, and conditions such as verrucous warts may spread from person to person like wildfire. This is why most trampoline parks insist that all users use trampoline socks to manage this risk. If your child shares a trampoline with others, wearing trampoline socks is a very sensible precaution to prevent infection.