【Item】 Ribo Balance Easy Optional Parts Knee Cushion Slip Prevention and Height Adjustment Guide 【Details】 This is an optional part for the Ribo Balance Easy. It prevents the knee cushion from slipping down due to aging and use. There are holes in the part where the screws go through, allowing for stepwise height adjustment and preventing slippage. I purchased multiple of these from the official shop, but I only used one, so I am selling the extras. *Unused item 【Shipping】 We will ship via anonymous delivery. We will take measures to prevent water damage during packaging, so please rest assured. We will ship within 2 days of purchase. 【Notes】 Please note that this item has been stored at home and inspected by an amateur, so there may be oversights other than those mentioned. We only ask that you understand that this is a used item that has been handled by another person. The actual color may differ slightly depending on your environment. Please understand.