Checkmate is a savings app with over one million users that have saved $$$ on brands like Sterye Mystery Boxes.
The Checkmate extension automatically applies Sterye Mystery Boxes discount codes, Sterye Mystery Boxes coupons and more to give you discounts on products like Halloween Mystery Box (Dropping 9/13).
Checkmate users have also been loving these products from Sterye Mystery Boxes.
Users have been saving products like this to their collections.