Great for building gross-motor and vestibular skills. Just rock back and forth, practice spins or use them to carefully walk forward or backwards in a duck-like motion. Walkers can even be used to add variety to push up routines. Constructed of durable polypropylene plastic. Set of 6 different colored Walkers, each measuring 23 inch x 3 inch x 4-1/2 inch with 4-1/2 inch x 5 inch foot pads. Please note: maximum recommended weight is 200 pounds.