New Balance Ball 55cm Exercise Yoga Fitness Ball Core Training Please read my self-introduction. ○○ Balance Ball 55cm ○○ Air pump is not included. The color is as shown in the first photo. The logo may vary. This balance ball is versatile, from exercise to diet, core training, and even as an office chair. Simply sitting on the unstable ball trains your core, improves posture, and is said to be effective for stiff shoulders and back pain. Why not train at home slowly and leisurely? ☺︎ - Anti-burst specification: does not burst if punctured. If the ball is punctured, it is dangerous if it bursts like a balloon, so the air will gradually escape and deflate. - For the air pump, a pump sold at 100-yen shops is sufficient, so we recommend that. We offer discounts if you purchase yoga mats or foam rollers together, so take this opportunity! ↓ #archi yoga mat #archi foam roller #archi boxing #balance ball #fitness ball #yoga #core #core training #balance