Fatigue対策 during sports, heat, cold, and UV protection. Arm sleeves compress the entire arm in a central direction, suppressing unnecessary muscle movement and supporting performance. It is believed that during exercise, unnecessary vibration of the arm muscles leads to a loss of stamina. Arm sleeves compress the entire arm, reducing unnecessary muscle shaking that leads to fatigue. In addition, the design gradually reduces pressure from the wrist to the upper arm, supporting the entire arm. ⚫︎ Set of both arms ⚫︎ Navy ⚫︎ Brand new, unused ⚫︎ Available in 4 sizes: SS, S, M, and L. ※ Please comment your size when purchasing. Sizes (Upper arm circumference) SS: 19.0~23.0 cm S: 22.0~26.0 cm M: 25.0~29.0 cm L: 28.0~32.0 cm Due to the size restrictions of the mail service, the outer box will be folded for shipping. Thank you for your understanding. Thank you for viewing. Please feel free to ask any questions in the comments.