This calendar has been designed specifically to fit most mini sized cookies that are 2″ to 2.25″ on their longest edge. Each cavity in the tray is approx. 2.5″ x 2.5″ x 1″ deep Designed by a cookier for cookiers! Each calendar includes a food-safe, recyclable white plastic tray Made in the USA! Use our Clear Heat Seal Bags for Mini Cookies: 3″ x 4″ clear bags See below for more info!