Heart is ~2.5" x 2.5" (not including keyring)Backer is laser cut from matte white 1/8" acrylic, which is engraved and painted black"Mama" is laser cut from 1/8" acrylic and attached together using 3M adhesive - you choose the color of "mama" acrylicKeychain has 1" metal keyring** "mama" shown in golden tan, nude, and dusty blue, beige, dark sage, mauve, and lilac