Jolly Jumper Exerciser on a Stand is portable and fits in any room. Door frames are not necessary for this exerciser as the Jolly Jumper is attached to the Stand. Jolly Jumper is the original baby exerciser. The saddle is designed to fit baby like a second skin in much the same way as a surgical back support or weight lifter's belt fits an adult. Most imitations of this exerciser do not provide this type of support. The Jolly Jumper Exerciser is sturdy and scientifically designed, allowing baby to enjoy healthy exercise from as early as 3 months (if baby can hold head up with full neck support) to walking age with a maximum weight of 13 kg or 28 lbs. Your baby will build strength, balance and coordination safely and comfortably with Jolly Jumper.