This Gaiam backless balance ball chair engages your core, relieves pain and helps you breathe better without the temptation of resting your back. PRODUCT FEATURES Alleviates aching back, legs and arms Promotes proper spine alignment, posture and overall well being Rolling, locking caster wheels WHAT'S INCLUDED 52-cm. balance ball 4 easy-glide casters Air pump PRODUCT DETAILS 24"H x 22"W x 22"D Weight: 9.5 lbs. Weight capacity: 300 lbs. For adults from 5' to 5'11" tall Plastic, PVC Wipe clean MODEL NUMBERS Charcoal: 95-9348 CHAR Purple: 95-9348 PURP Blue: 95-9348 BLUE Green: 95-9348 GREE Promotional offers available online at Kohls.com may vary from those offered in Kohl's stores. Size: One Size. Color: Blue. Gender: Unisex. Age Group: Adult. Material: Plastic.