Canada Post Pre-paid Xpresspost To USA For Documents Only
It's about the size of a very large shoe. About 10 inches x 6 inches. Had these for years from work but we aren't using them anymore. I checked with Canada Post today and they work fine. They cost more than $10 each at the time I'm pretty sure. If you need to mail something to the states and track it, or a last minute birthday card, this is for you! Documents only.