McDonald's has collaborated  to create the special Happy Meal, which is reportedly already out in some other countries.

The Crocs Happy Meal includes your food along with one of 17 limited-edition Crocs Clog Keychains inspired by the iconic footwear. Each of the collectible keychains comes with a mini shoe box and unique sticker pad to customize your new tiny kicks.

A QR code on the box also takes customers to a webpage where they can design a unique pair of digital Crocs with patterns, color combinations and decorations.

The Crocs Happy Meal boxes will be available beginning Sept. 17 in all McDonald’s U.S. locations and over 40 markets globally for a limited time.