American Crafts-DIY Shop 3 Thickers Alphabet Stickers: Stylist/Natural Cork. These delightful stickers are the perfect finishing touch for any project! This package contains 103 letter and number cork stickers on two 11x5-1/2 inch sheets. Acid free. Archival quality. WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm- do not mouth or chew. Imported.