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BURST-RESISTANT: Forget about the burst. Sportneer balance ball is anti-burst, super pliable, non-deformable, and can easily support up to 660 lb. Designed with 4mm thick PVC which is environmental-friendly and non-toxic without any worry of possible allergy.
EXTREME ANTI-SKID PERFORMANCE: Abrasion-resistant ABS platform with 8 anti-slide floor pads and non-slip durable standing surface for maximum stability and added strength, you'll feel stable while exercising even when you're sweaty
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STRENGTHEN MUSCLES: This wrist exerciser is designed to improve strength, power and speed in the wrists, fingers and forearms. The TENSION is about 7kg, which is ideal for athletes, sportsmen, fitness enthusiasts, professionals, rock climbers, golfers and tennis players
ADJUSTABLE DESIGN: Perform regular and reverse wrist curls with the adjustable stabilizer pad, instruction included. TRY IT AT THE MINIMUM TENSION FOR THE FIRST TIME TO USE
