Children's Exercise: Take your kids to the gym with this awesome adjustable pretend workout equipment set; designed specifically for kids to enjoy at the gym or home, promoting family fitness activities Adjustable: Weight plates can be filled with sand or water to increase weight; these adjustable weight plates allow your kids to grow stronger while having loads of fun Kid Friendly: This toy exercise set introduces your child to proper exercise and weightlifting forms and routines; it teaches them how muscles move and how the body works as they pretend to do curls and lift Starter Kit: Perfect for slowly developing kids’ muscles; enjoyable for both kids and adults, teaching them the basics of exercising and weight lifting in a safe environment; suitable for children ages three to eight years old