S-size arm sleeve made with HDC compression material, providing appropriate pressure support to firmly support the arm. - Brand: McDavid - Model: M656 - Size: S - Pressure Support: Appropriate pressure support - Application: For arms - Material: HDC Compression - Size Range: 17-21cm - Quantity: 1 piece I am selling this because I accidentally purchased it. I opened it to check the product and when listing it on Mercari (for taking photos). It has not been worn and is new and unused. Please note that it will be shipped without the box, with only the contents and simple packaging. Thank you.