Like General Mills, Post Canada now has an offer of free socks when you purchase qualifying products and submit two PIN codes. Get a free pair of Avengers Infinity War socks while supplies last.

To participate you will need to purchase two boxes of specially marked Post cereal, and submit the PINS from both of these products by visiting the website through the link below. The PIN codes must be redeemed by May the 31st, 2018. It looks like the PINS can be found on Honeycomb, Shreddies, Honey Bunches of Oats, and Alpha-Bits brands.

There are a total of 25,000 pairs of socks available, and you are able to choose from the following:

• 4,167 adult size Iron Man designs
• 4,166 adult size Thanos designs
• 4,166 adult size Black Panther designs
• 4,167 kids size Iron Man designs
• 4,167 kids size Groot designs
• 4,167 kids size Rocket Raccoon

Click here to enter your PINS and claim your free socks!