Hppe,Spandex,Nylon Suitable size: our cut resistant sleeves measure approx. 20 x 9.5 cm/ 7.9 x 3.7 inches (L x W) before stretching, the arm preserver sleeves have average size that fits most people's arms, and fit both right or left hands. In addition, they are comfortable to wear and have a fresh cool feeling on your arms, also washable and reusable. Level 5 preservation: the anti abrasion safety arm guards have 5 levels of cutting resistance, abrasion resistance and tear resistance, which can effectively preserve human's hands from being hurt by knives and other pointy things, providing heat and cut preservation from the knuckles to your shoulders. Comfortable to wear: these arm cover sleeves are breathable and stretchy to provide you with a comfortable wearing experience, light weight ensures that there is almost no burden on your arm; After using, they can be washed easily and dried naturally to be ready for next time use. Good workmanship: our level 5 preserveive arm sleeves are made of HPPE, nylon and spandex material, the arm preservation sleeves are 15 times stronger than steel, the high performance polyethene makes it highly breathable, elastic and lightweight, anti-cut and comfortable to wear, helping to preserve the forearms from mild burns and high temperatures.