The Bosu Pro Balance Trainer is a 26-inch half-ball designed to challenge your balance, build core strength, and add versatility to almost any workout. Use the dome side up for classic balance training that engages stabilizing muscles in the ankles, knees, and hips, or flip it flat-side up for a firm, elevated platform that supports push up, plank, and strength-training moves. Fitness trainers, physical therapists, and home gym owners rely on this balance trainer because it adapts to cardio, strength, pilates, and yoga routines without taking up much floor space.Built from burst-resistant, latex-free material, the dome supports up to 350 pounds and holds its shape through repeated use. A proprietary non-slip base keeps the trainer planted on hard floors so it will not slide out from under you mid-exercise. Setup is simple: the box includes a hand pump and downloadable workout guides, so new users can inflate the ball, adjust the firmness to their preference, and start their first session right away.Measuring 25.7 inches long by 25.1 inches wide by 3.8 inches high when inflated, and weighing 17.5 pounds, this balance trainer is compact enough to store in a closet or under a bench between workouts but substantial enough to anchor a serious training routine. It works equally well for sports conditioning drills, rehabilitation exercises, and everyday balance and core work.Whether you are recovering from an injury, training for a sport, or simply looking to add variety to your fitness routine, the Bosu Pro Balance Trainer gives you one tool that covers strength, stability, and flexibility work in a single compact package.