Reflective Bone Stickers for your bike or helmet. Each set includes 13 pieces of high visibility reflective stickers in our unique bone pattern. Stickers are made in 3M Scotchlite Reflective Graphic Film. Instructions 1. Clean the surface where you want to mount your sticker. 2. Peel off the sticker and put it on. Contents: One sheet. Sheet measures: 9.5 x 23 cm (3,8 x 9,2 in). The bike image features more than one sheet of Reflective Bone Stickers. The stickers can be peeled off from the frame without harming it.