From the brand

The yoga half ball targets the core muscles of your body helping you to not only gain strength, trim and tone, but to strengthen the entire body and improve balance.
The Balance exercise delivers an ever-changing dynamic surface that you can stand on, jump on, kneel on, and lay on, to perform exercises to train and challenge every part of your body.
The core balance fitness helps to increase body strength and improve balance, coordination and body awareness which means overall improved fitness and fewer injuries.

★ 100% Safety: half fitness ball is made of environmentally friendly PVC to avoid allergy. It does no harm to your health. Anti-slide base & anti-skid texture to improve users’ stability. Wear-resistant ABS base plus 8 anti-skid feet and anti-burst technology guarantee safety during use. 660 lbs large weight capacity.
★ Lightweight & Portability:balance trainer with fitness cords is designed with compact size, which is light weight, easy for you to carry it to the gym, park, or beach to enjoy workout. Half dome ball is the absolute best exercise gear for your home workout and a great addition to your yoga practice.
★ Free Bonus for you: Come with a complimentary foot pump. And two air plugs. Also with 2 detachable resistance bands broaden workout types, so you can do front squat, standing adductor, bent-over row and more to reshape your body. Now let be your personal trainer and enjoy superb gym experiences at home.(Only one pump)
★ Versatile Workout Balance trainer: Exercise ball with anti-skid peddle texture is compatible with a variety of exercises including lower-ab crunch, plank, triceps dip and more, ideal for users of all ages to increase core strength, stability and flexibility and making the best of your home fitness routine.This anti-burst half stability ball is durable and easy to clean after use.