【Excellent Condition】KEYUCA Balance Seat Cushion, Gray, Approx. 39cm Diameter

【Product】
● KEYUCA
● Balance Seat Cushion
● Gray
● Diameter approx. 39cm
● Core training
● Posture correction
● Includes air pump

◎ Used only a few times
◎ No box or instruction manual (as shown in photos)
◎ Amazon reference price: ¥3,839
◎ No instruction manual, but included a photo for reference

【Product Details】
Size: Diameter approx. 39cm, Height approx. 6cm / Material: (Cushion Cover) 100% Polyester, (Filling) PVC / Set Contents: Cushion cover, inner cushion, air pump, air pump nozzle

【Core Training Just by Sitting】
Simply place it on your office chair, floor, or living/dining chair, and sitting becomes exercise. It trains your core by naturally encouraging you to balance. Its interior-friendly texture allows it to blend subtly into your room.

【Balance Ball x Cushion】
While unstable, the seat surface is flatter than a balance ball, making it easier to sit on and use casually. Even just sitting on the balance cushion naturally encourages you to maintain correct posture and train your core, making it recommended for desk workers.

【Balance Ball x Seat Cushion】
On your office chair, on the floor at home, on your work chair...
Simply place it, and sitting becomes exercise.
It trains your core by naturally encouraging you to balance.
While unstable, the seat surface is flatter than a balance ball, making it easier to sit on and use casually.
The cover blends with your interior, so you can place it subtly in your room.

※ Will be shipped deflated.
※ This is a used item, so please only purchase if you understand this.