No yelling at Fido for bringing this ball in the house...that's exactly where it belongs! The Chuckit! Indoor Shaker is the perfect complement to rainy days, hardwood floors, or late-night games of fetch. The lightweight Bounceflex Core Technology makes it soft enough when meeting a wall or furniture while giving it just the right amount of bounce for indoor play. Use it with the Chuckit Indoor Launcher for slobber-free fun.