This is a set of 4 Azwan AP Cleanroom Caps SCB Blue / 2-4936-04. I am also selling 3 green ones. Reference price: Amazon ¥814 New, unopened (I have not taken them out of the bag to check the contents. They are old, so there is a possibility of deterioration). ● Size: Unisex ● Material: 100% polyester with conductive thread (stripe) ・Shipping will be via Yu-Yu Mercari Mail, folded. ・This item can be shipped within 24 hours. Please feel free to comment if you have any questions! Thank you very much.