Little Jr First TrampolineDISCONTINUED Let baby jump into the fun with Jumpin' Jr. First Trampoline. Easy to assemble, with foldable legs for storage, the First Trampoline is a safe and convenient way for toddlers to exercise and play while developing their balance and strength. An easy grip rubber handle provides support for those just learning how, while the 26' round base can let older kids get in on the action. For a maximum weight of 50 lbs. Jump in! Item Dimensions: 17.