ZERO GRAVITY BOUNCE! Engineered to be the highest bouncy ball. The lightweight Zero Gravity Foam is the bounciest material on earth! Until you bounce it out of this world of course. Say goodbye to small rubber balls and old pink super balls CHANGES COLOUR IN THE SUN! Take the Waboba Lava Ball outside and watch the yellowcracks erupt to red in the sun. The Lava ball features UV colour changing technology, and bounces sky high 100 percent NON TOXIC! Its high quality and extremely durable. The Waboba Lava Ball withstands endless bouncing, sport uses, and indoor and outdoor games PERFECT ANYTIME GIFT! A volcano toy they can bounce! The Lava Ball is the most fun bouncy ball ever with the surprise color change! Loved by toddlers, kids, and adults. Size makes a great stocking filler FUN VOLCANO TOY! Perfect for volcano lovers. If you cant visit your favorite volcano, the Lava ball makes for a great volcano souvenir gift. Size 65mm