Adjust size acoording person hardness requst,No not over it Max size.
If you want pump you can search from my store.
EXPLOSION-PROOF: it is made of thickened and durable professional PVC material.Your safety is our first priority.
Each yoga ball can bear up to 2cm of cutting without explosive air release the yoga ball is made of commercial grade materials, providing excellent antiskid experience EASY TO CLEAN: our yoga ball is very easy to clean, just a soft wet cloth can easily clean. WIDE RANGE OF APPLICATIONS: yoga ball is used for home exercises, yoga, Pilates,
back relaxation and so on, to help focus on thighs, hips, abdominal exercises,
pelvic floor muscles, exercise balance, and other specific muscle goals, aerobic and gymnastics exercises
Non-slip ribbed body stays put with skin contact: the PVC body has a matte surface with horizontal ribs
contoured all around it -- making it easy to hold without slipping while tossing, bouncing or squeezing the ball even with profuse sweat. User Tips: store your ball indoors at room temperature. Clean your ball with a soft cloth or sponge and mild soapy water if needed. Keep away from sharp objects.