3 - 1/8 inch x 4 - 5/8 inch (8 cm x 12 cm) each. Menthol 5%. Feel it working instantly. Powerful targeted relief. Icy to dull, hot to relax. Comfortable fabric. Stays in place. Wear for up to 8 hours. Keep carton as it contains important information for usage of the product. Targeted Relief For: Simple backache. Muscle strains. Arthritis. Bruises. www.icyhot.com. Recyclable carton. Made in Japan.