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About this item

• 60% Plastic, 40% Pvc
• GIVE YOUR BACK A REST: Designed by health and fitness professionals to strengthen your back and improve posture, engage your mind with this stability ball chair by JFIT, helping align your spine and relieve back pain, while boosting energy levels
• ERGONOMIC SHAPE: This new, innovative ergonomic shape, is more comfortable than conventional ball chairs with more surface seating area, increasing the activation of your core muscles and improving posture throughout the day
• DIMENSIONS: Seat height with base, wheels, and ball is 19.75", great for users from 5' to 6' 1" tall, and fitting most standard height desks, with additional risers included giving you an extra 2" per riser, and max weight capacity of 300lbs
• SIMPLE ASSEMBLY: Included is a removable oval shaped 24" x16" stability ball, air pump with needle in handle for storage, base, back panel, 4 easy-glide casters (2 back lockable wheels), and inflation instructions
• USEFUL TIPS: While it may take a day to properly allow the stability ball to stretch out, you may need to re-inflate after initial inflation, and for any spills, easy clean with mild soap and water

Product Description

Anti-burst ball is made of a new material that is stronger than ever, holding up to 2200 lbs. The burst resistant material allows the ball to slowly deflate if punctured, minimizing the chance of injury. Specifically target your abs, back and glutes. Strengthen and tone your entire body by working your muscles in a completely new way by giving constant resistance from every direction. Great for people of all ages, and all fitness levels. Comes with a pump and an exercise guide. Exercise Ball Size Guidelines: 18-inch (45 cm) for users between 4' 6" and 5' 0". 22-inch (55 cm) for users between 5' 1" and 5' 7". 26-inch (65 cm) for users between 5' 8" and 6' 1". 30-inch (75 cm) for users between 6' 2" and 6' 6". 34-inch (85 cm) for users 6' 7" in height and taller.

Amazon.com

Safe, versatile, and fun to use, this Professional Grade stability exercise ball from J Fit is a great way to work out in the comfort of your home. This anti-burst ball is made of a new material that is stronger than ever--holding up to 2000 pounds. And if it ever does get punctured, the ball slowly deflates to minimize the chance of injury.

Specifically targeting your abs, back and gluts, the exercise ball strengthens and tones your entire body by working your muscles in a completely new way by giving constant resistance from every direction. It's a great exercise tool for people of all ages and all fitness levels. An air pump and exercise guide is included.

Exercise Ball Size Guidelines

• 34-inch (85 cm): For users 6' 7" in height and taller
• 30-inch (75 cm): For users between 6' 2" and 6' 6"
• 26-inch (65 cm): For users between 5' 8" and 6' 1"
• 22-inch (55 cm): For users between 5' 1" and 5' 7"
• 18-inch (45 cm): For users between 4' 6" and 5' 0"