https://www.cheerios.ca/bringbackthebees/

Get your youth involved in the movement by giving them their very own #BringBackTheBees T-Shirt!
Purchase specially-marked boxes of Cheerios, Honey Nut Cheerios, and MultiGrain Cheerios and redeem the PIN Code printed inside for a FREE Youth Bring Back the Bees T-Shirt!
There are 50,000 youth T-Shirts available to be claimed.
Limit 4 T-Shirts per household
Allow 10-12 weeks for shipping.
Offer ends August 31, 2019, or while supplies last.