Have you conquered the Castle Peak mountain summit? Get cred for that trail with a Castle Peak trail sticker! We have 100's of other mountain summit peak trail stickers too. Finally a sticker that is as tough as the trails you tred. Each sticker is printed on a thick, durable vinyl with a matte finish-giving your stickers a premium look & feel. Protected from scratching, rain and sunlight… so apply these stickers on pretty much any smooth surface, indoors or outdoors. Size: 3×3 inches.