Inoak Corporation "Polon" is used to protect the heel. High performance shock absorbing material that provides excellent fit near body temperature and supports shock absorption during various active situations. Uses "Colax Parklin" yarn that is water absorbent, quick drying, antibacterial and deodorizing. The thin design of the short socks is lightweight and easy to move around and care for your shoes. Soft touch finish reduces the feeling of tightness on the tip. Provides excellent shock absorption and excellent fit to protect your heels. Antibacterial, odor resistant, sweat absorbent, and quick drying. Unisex. Can be used on both left and right sides. Recommended for: Those who have trouble with heel or sole pains, such as standing work, walking and other people who have trouble with back or knee pain when moving; Material: Cotton, acrylic, nylon, etc.; Size: One size fits all: 8.7 - 10.6 inches (22 - 27 cm); Note: If the position of wearing is misaligned, we recommend wearing it directly. Please do not wear this product outside of the heel. ·There is a risk of ripping if the method of wearing it is wrong or under strong force. This shock-absorbing material is not intended for strong impact such as jumping from high places. Please do not use while sleeping If you experience any abnormalities such as pain, itching or swelling during use, stop using and consult a physician. Please do not leave it under high temperatures as this may cause deformation or deformation of the pad or rubber. Do not use fluorescent bleach. If strong friction is applied in wet conditions, such as sweat or rain, the color may bleed onto other items. When washing, color may fade at the first time, so please wash it separately. Please do not tumble dry or use an iron to avoid forced drying.