APPLER RISE SPORTS, Producer of KID-SKI Teaching Aids Parents can now start teaching their kids to cross-country as early as 2-3 months after they learn to walk by accumulating... with a handle and leash. Gives you parents full control of your high-energy kids with just one hand. For toddlers ages 1-3, use the leash and handle for crowded places like airports..., shopping malls and Disney World. For ages 1-5, detach the leash and use the handle for sports like skiing, snowboarding, skating, inline skating and learning to ride a bicycle...