1. 55-85cm Exercise Ball, Extra Thick Swiss Fitness Yoga Pilate Balancing Ball with Pump Plug Kit, Matte Surface Anti-Slip - TRIDEER 2000lbs Anti-Burst Stability Core Cross Physical Therapy Training Ball (Click Link to Check Price on Amazon)
Editor's Rating : 9.6 out of 10
High-quality fitness ball: Made of environmentally friendly, hypo-allergenic and articulated material, first-class processing. The ball is very hard wearing, anti-burst. Strong and Durable: With the ability to support over 2000 lbs. Durable enough to be used every day as an exercise balance ball chair for work desk office to improve your posture.A must-have training ball: The effectiveness and an almost inexhaustible selection of exercises make the exercise ball a must-have in your training repertoire. Ideal for fitness studios, for workout at home and at leisure. Ideal for yoga, pilates, fitness or simply for healthy sitting.

2. Gym Ball Replacement Plug Adapter Kit (Click Link to Check Price on Amazon)
Editor's Rating : 9.9 out of 10
Replacement plug kit for stability gym ballsKit includes 1 plug puller, 1 adapter for air pumps or compressors, and 2 plugs

3. Trideer 65cm Exercise Yoga Balancing Ball with Resistance Bands, Stability Ring & Pump Plug Kit, Great for Improving Balance & Core Strength,Relieving Back Pain & Adjusting Posture,for Men & Women (Click Link to Check Price on Amazon)
Editor's Rating : 8.8 out of 10
Stability Ring: Keep your fitness ball in place with this sturdy and durable Balance Ball Ring while sitting or doing your exercises. Suitable for 55-85cm(best for 65cm).Resistance Bands: Made of TPR (Thermo-Plastic-Rubber) material, and bands have Buffered Handles & Metal Clips(included). It is highly Stretchable & Durable. Having the ability to support over 100 LB. Furthermore,the bands help you exercise your Arm Strength & Entire Body.

4. Exercise Ball -Professional Grade Anti Burst Tested with Hand Pump- Supports 2200lbs- Includes Workout Guide Access- 55cm/65cm/75cm/85cm Balance Balls (Green, 85 cm) (Click Link to Check Price on Amazon)
Editor's Rating : 9.5 out of 10
Green 85CM Variation ✦Anti-Burst Tested✦ Professional grade PVC material, extensive testing, and a unique anti-burst design provides for the highest quality exercise balls available on the market. Every exercise ball can withstand up to a 2cm cut with out explosively deflating.✦Versatile✦ Live Infinitely fitness balls make for the perfect addition to your home exercise equipment to improve your core and overall strength. Perfect for pilates, yoga, crossfit or the hundreds of low impact exercises available.

5. Wacces Anti-Burst Fitness Exercise Stability and Yoga Ball with Pump ( Purple - 75 CM ) (Click Link to Check Price on Amazon)
Editor's Rating : 9.6 out of 10
Helps relax muscles, remove tension and increase tone.Increases flexibility in abdominals, thighs and lower back.