This is clear adhesive patch. They are so complicated but super cool!!! A really good gift to your friends. -personalized pick your color -creative letter embroidered sew on patches. -colours and size are shown in the pictures. -perfect for jeans, jackets,vests, hats, backpacks,bags Size:5.85*4.5-5 cm The patches are given a perfect threading finish, which gives the letters a great finishing look and gives the strength you need to keep the letters’ beauty intact. They are constructed in many combined colors to accommodate all your color desires in one letter patch. They are made of light materials for insignificant additional weight on your pouch, backpack, tote bag, or laptop case you intend to attach them on.