These silk arm covers are made of natural materials for UV protection. I received a lot of them, but I don't particularly like the feel of them on my skin, so I'm selling them. Silk is a natural material, so it seems to be a material that is easy to use for those with sensitive skin. It also seems to be a material that moisturizes. There is also a pink color variation. The last two images are borrowed from the shop page. Material: Silk Size: Approximately 50cm in total length Color: Black Set of 2 of the same color Made in Japan Please refrain from purchasing if you are concerned, as the item has been stored at home by an individual. [Shipping Method] The item will be placed in a waterproof bag that conceals the contents and shipped via Rakuraku Mercari delivery. *Please be sure to check the contents before rating the product. We cannot respond to any defects after the rating. Please be sure to check the product before rating. Thank you.