just like receipts

And the size of the cavity is about 3 inches long and 1 inch deep

Nickel free

gently pull the two insoles apart to reveal the insole pair

Non-Slip Shoe Pads 8-Pack Heel Protectors Set Self-Adhesive Silicone Sole Grips for Shoes Whistles just like receiptsNon Slip Shoe Pads 8 Pack Heel Protectors Set Self Adhesive Silicone Sole Grips for Shoes Non Slip Shoe Pads 8 Packs: The package include 8pcs anti slip shoe grips in 2 shapes, each shape has 2 pairs. the shoe slip grip are design to enhance the friction between soles and the ground to reduce risk of slipping, perfect for dress shoes, formal leather soles, high heels, sneakers, and boots. Durable Silicone Material: shoe bottom grip pads is made of