Instructions: Hand wash Country of Origin: China 【Gentle Silk Touch】Silk, known as "second skin," is a natural fiber composed of amino acids, the same components as skin. It is breathable, clean, and comfortable. These arm covers are safe for children and those with sensitive skin. 【UV Cut Rate of 99% or More】Silk has over three times the UV protection compared to regular fibers! These arm covers, made with luxurious silk, protect your precious skin from the summer sun and UV rays. 【Excellent Elasticity】LINOR arm covers are 100% silk, providing exceptional elasticity. A common complaint about arm covers is "They feel too tight and are uncomfortable to wear for long periods..." These arm covers are designed for Japanese women and will fit your arms perfectly! ※Slight stain on one side