Thomas the Tank Engine & Friends Stickers. Printed on a clear material, when applied, the sticker virtually blends into the paper it is put on. There are no unwanted ôwhiteö edges to be found when clear stickers are used. These stickers are repositionable at time of use. Acid and lignin free. Sheet contains 17 stickers. Dimension: 5 1/2" x 12" Clear Mylar.