Finger Power, a hot topic on TikTok! Set of 2 ^ - ^ This finger strengthening training and rehabilitation support is perfect for those aiming for strong and flexible fingertips. Made of silicone, it offers excellent durability and comfort. You can use it for a long time. 【Adjustable Resistance Levels】 13LB 17LB 21LB Suitable for both men and women, and can be used by the elderly and children. It's helpful for those who play the piano, climb mountains, or do bouldering. It's a free size that can be adjusted to fit your hand size, providing excellent comfort. This is a new, unused product, ready for immediate use. By moving your fingertips, the brain is also stimulated, which can improve rehabilitation and blood circulation, and can be used in day services and nursing homes. Made of silicone, it's compact and portable, allowing you to train anywhere ^ - ^ [Material]: Silicone [Applications]: Piano, mountain climbing, general rehabilitation, bouldering [Suitability]: Unisex, elderly, children [Adjustability]: Free size, approximately 15 cm [Strength]: 13LB 17LB 21LB [Product Safety]: Non-toxic, odorless, and durable. ★ To reduce shipping costs and offer the lowest price, if you would like to change from Yu-Yu Mercari delivery to Raku-Raku Mercari delivery, an additional 200 yen will be added. Thank you for your consideration. If you have any questions, please feel free to ask.