1. Isokinetics Inc. Adjustable Back Exercise Ball Office Chair - "Tall Boy" Frame (2" Higher) - with Black 52cm Ball - Office size 60mm/2.5" wheels - w/Starter Pump and Ball Measuring Tape (Click Link to Check Price on Amazon)
Editor's Rating : 8.9 out of 10
SITTING HEIGHT: Measurements require ball filled to 52cm (with ball on floor, 20.5" measured straight up to a line level with ball top). Each person is different, but the Tall Boy frame user height range is about 5' 2" to 6' 1". We recommend you test sitting heights at home before buying. In the frame, the ball top is 25.5" unsat on. Seated, a 135 lb person sits about 21.5" off the ground 150 lb, 21"

2. Exercise Ball | Professionally Tested | 660 lb Anti Burst & Anti Slip | Strength Yoga & Pilates | Home Gym | Active Office Work Desk Chair | Includes Pump | Eco Friendly | 55 65cm (Click Link to Check Price on Amazon)
Editor's Rating : 8.9 out of 10
REACH NEW FITNESS LEVELS - An all-around fitness tool and exercise ball that can be used to strengthen back and ab muscles, rehabilitate back injuries/surgeries, improve balance and mobility and prevent injury.EXERCISE VERSATILITY - Build strength, balance, flexibility by integrating our ab exercise ball into Yoga, CrossFit, Pilates, circuit training, strength training, martial arts and more!

3. LuxFit Exercise Ball Chair, Black (Click Link to Check Price on Amazon)
Editor's Rating : 9.1 out of 10
OFFICE CHAIR DESIGNED BY HEALTH EXPERTS - To help with spine and back healthYOGA BALL CHAIR IMPROVES REHABILITATION TIME - may help prevent spine disorders

4. Gaiam Balance Ball Chair, Black (Click Link to Check Price on Amazon)
Editor's Rating : 9.1 out of 10
Created by leading health and fitness experts to improve your back healthEmploys the same balance ball used in your workout routine. Designed for users 5-feet to 5-feet, 11-inches tall

5. Ivation Balance Exercise Ball Chair - Office-Size 60mm/2.5" Wheels - Starter Pump & BONUS Latex Resistance Band Included (Click Link to Check Price on Amazon)
Editor's Rating : 9.5 out of 10
Innovative Ball Chair Created by Leading Health Experts Improves Back & PostureInflated Design Builds Healthier Back, Aligns Spine & Relieves Back & Lumbar Pain