PREMIUM QUALITY & BIGGER SIZE: Big size with 16,34 inch diameter, larger space for both feet; Premium Wobble Balance Board is made of high grade heavy duty TPE plastic, very high durability and weight capacity up to 300lbs ANTISKID BOTTOM, SURFACE WITH MASSAGE SPIKES: This Premium Balance Board Ankle has massage spikes at the surface and bottom to prevent slipping, easy to clean, feel so nice both barefoot and with shoes; Also, you can enjoy massages, gently stimulate blood flow while doing exercise PRACTICAL REHABILITATION TOOL FOR PHYSICAL THERAPY: Balance Boards are used by physiotherapists and rehab centers across the world for effective injury rehabilitation; Simply standing on the Wobble Board and shifting your weight in a 360 degree rotation will engage and stretch the muscles in your lower leg, hamstring, groin and core; Great to regain strength and rehab injuries such as, ankle and Achilles injuries, broken bones and sprains, hamstring injuries, tendinitis and more GREAT ADDITION TO DAILY FITNESS ROUTINE & STANDING DESK: Balance Board Core Trainer helps you develop core strength, stabilize the muscles, improve balance and coordination by hundreds of exercises like pushups, planks, mountain climbers, burpees, squats, tree pose and more; Reduce fatigue, prevent back pain, improve posture and boost alertness by use this Balance Board for Standing Desk VERSATILE, COMPACT BALANCE BOARD: With the lightweight, portable design with handles, this Balance Workout Board can be used almost anywhere; Ideal for home gyms, outdoors, fitness clubs, rehab centers or your standing desk