You need to email these guys to get your free sample. While the promo only allows you to enter your ‘zip’ code they do accept Canadians (as you can see in the terms and conditions), but you need to email them with your details. So you can email Goodnights here (its a online contact form) and make sure you enter that you want the freebie but you live in Canada, so tell them; your address, boys/girls underpants and size and they should honor it.
The free sample is for goodnites underpants for kids. You get to chose whether you want boys or girls and also the size.
→ Click here to get your free Goodnights underpants sample
T&C’s: Please allow 4 to 6 weeks for delivery. Offer good while supplies last. Requester must be at least 13 years of age. Offer valid in the 50 United States including APO/FPO addresses, District of Columbia and Canada. Limit of one request per household. Requests from groups, organizations or post office boxes will not be honored. Offer void where prohibited by law. Kimberly-Clark is not responsible for late, lost or misdirected mail.