Wubble X is the amazing anti-gravity Wubble Bubble Ball that bounces, floats, and spins, like no other ball in the world. Part bubble, part ball, just fill it with helium and watch it play like nothing you've ever seen before. Bounce it, spin it, whack it, tap it, and watch it glide through the air in slow motion. Wubble X is the only ball capable of being neutrally buoyant. That means you can make it float and hover in the air, like magic! Our Wubble X helium (included) allows you to achieve neutral bouyancy for 5-30 minutes. But after that, your ball still stays super bouncy for days. Wubble X can be refilled with helium over and over again.