Product Details Product Dimensions: 7.1 x 5.7 x 11.8 inches ; 3.9 pounds Shipping Weight: 3.3 pounds Domestic Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues. Origin: China Item model number: PBTN-000-06 Multipurpose trainer for practicing all your tennis skills; dual-swivel connectors keep cord from tangling Builds quickness, hand-eye coordination, and stamina; 15-foot Kinetic Cord stretches up to 30 feet Sets up virtually anywhere and stores easily; cord and training balls fit into base No need for a ball machine or wall; rugged, non-slip rubber base for indoor and outdoor practice Ages 7 and up; base weighs 2.75 pounds; includes two practice tennis balls SKLZ PowerBase Tennis Trainer provides a solid base for building your game. With the sturdy non-slip base and no-tangle Kinetic Cord, you get hours of dynamic practice to get your game - and your body - in shape. Practice all your strokes without needing a net, court, or practice partner. And improve your reaction time as the ball always returns to you. SKLZ PowerBase Tennis Trainer is the ideal practice tool for improving your entire set of tennis skills without a net, court, or partner. With the sturdy non-slip base and no-tangle Kinetic Cord, you get hours of continuous practice to get your game and body in shape. Not only can you improve all your tennis strokes, you can maximize your speed and cardio while building quickness, hand-eye coordination, and stamina. It sets up virtually anywhere and stores easily--the cord and tennis balls fit right into the rugged, non-slip base. The durable Kinetic cord stretches up to 30 feet, with dual-swivel connectors that keep the Kinetic cord from tangling as it stretches up to 30 feet and then returns the ball to you. Features: Maximize your speed and cardio The perfect trainer for practicing all your tennis skills Builds quickness, hand-eye coordination, and stamina Sets up virtually anywhere and stores easily: cord and tennis balls fit into base Practice on your own without needing a ball machine or a wall Rugged, non-slip rubber base for indoor/outdoor practice Base weighs 2.75 pounds No need for a ball machine or wall Durable 15-foot Kinetic Cord stretches up to 30 feet Dual-swivel connectors keep cord from tangling Includes two practice balls Ages 7 and up What's in the Box? PowerBase unit Kinetic Cord Two practice tennis balls