The Shroom Tumbler is a unique mushroom shaped recreational prosthetic accessory designed for floor exercise, tumbling and other “mat” type activities like yoga. The Shroom Tumbler is constructed from a flexible, yet strong, synthetic rubber. It will support the weight of persons up to two hundred pounds but it is flexible enough to be used by children eight years and older. The mushroom shape allows the device to progressively cushion the impact of cart wheels, flips and hand stands. The Tumbler provides excellent traction on a variety of surfaces and supports weight and load in a broad array of angular positions. It is proportioned to duplicate the surface of the palm area of the hand.