These 7×7-stickers are made of high-qualitative PVC plastic. The stickers are made for speedcubers and last a long time if handled properly. You must apply the stickers yourself, make sure you don’t touch the adhesive and that the cube surface is clean when you apply the stickers.
Here are several different stickers for your 7×7. They’re available for cube-shaped 7×7, miniature 7×7 and 7×7 with rounded sides. They’re also available in different colors. Read more below.