anti burst gym ball 1. Material PVC 2. DIA.:30cm,45cm,55cm,65cm,75cm,85cm,95cm 3. colar:any colar for your choice

Products feature:

1. Improve core strength, agility and balance

2. Totally impact-free for joint safety; designed for all skill levels

3. Includes easy-to-use air pump

4. Color in red, blue, purple, grey, black or any other colors is OK. 

anti-burst gym ball; yoga ball