I Heart Apple PI - Vinyl Laptop or Macbook Decal (WHITE) Manufactured by Yadda-Yadda Design Co. If you purchase this Yadda-Yadda brand decal from a seller other than Yadda-Yadda Design Co. you are purchasing a counterfeit item. Instructions, link to video and 2 free practice stickers included with every YADDA-YADDA Design Co order. Decal will fit nicely on 13", 15" or 17" Macbooks as well as similarly sized laptops. Made with low tack adhesive vinyl that can be removed without leaving residue. I Heart Apple PI (shown on 13" Macbook) And really, who doesn't?