Thank you for viewing our product! ★ Brand new, unused! ★ No need to comment, immediate purchase welcome! ★ Free shipping! ★ Please refrain from price negotiations! 【Product Details】 ・Easy core training, just by riding it! ・You can easily train while doing other things. ・Comes with a convenient air pump to adjust the air volume ・You can change the load by adjusting the air volume, so it's great for everyone from children to adults ・The uneven surface also promotes blood circulation ◎ 【Details】 Size (approx.): 34cm in diameter Material: PVC Color: Gray 【About Shipping】 ・Free shipping nationwide ・We will ship within 1-2 days after payment is completed ・We will use simple packaging, but we will be careful with the packaging ・We cannot accept requests for combined shipping, specified shipping methods, or time指定 【Other】 ・We thoroughly inspect our products, but if there is a defective product, please contact us before leaving a review. ・All items are in stock, so there is no need to check stock in advance ・Even for products that have comments, the person who presses the purchase button first will be given priority ★ To prevent any trouble, please read the "Profile" before purchasing.