You can go to Taobao to search yoga balls. Then click in to see what others say about the yoga balls in this shop. Then see if the delivery, product description and after-sales evaluation of this store are red. If it's green, it means that there are fewer people in this store. Then choose what you think is appropriate and place an order. After receiving the courier, see if the goods are suitable. If it is not suitable, you can contact the seller to return it or return it. When buying, you can ask the seller if there is any freight insurance. If not, you can buy it yourself for a few cents. When you are not satisfied with the return, the freight can be reimbursed.