Sorry, I absolutely disagree. It does not say "waterproof" and there's no implication that it is.

I've worked in the outdoor equipment industry for several years and there is a difference between waterproof and weatherproof. No question about it. There is nothing misleading about it and MEC makes NO claim in their description of the product that it is "waterproof".

Waterproof means that the gear is impervious to water. Weatherproof means that it will keep water and wind out for a limited time but does not imply in any way that it will keep all the water out for extended periods of time. They are two different degrees of dealing with the weather and both terms are accurate and not interchangeable (there are two very different definitions in the dictionary). Generally speaking, I'll use weatherproof gear for shoulder seasons and waterproof gear for winter use or when it's raining hard (which in this neighbourhood is about 5 months of the year).

I see people interchanging the two words all the time but it's their ignorance (for lack of a gentler word) that they do so. For instance, I was reading a thread in these forums about shoulder bags and someone mentioned that the Seal Line Urban Shoulder Bag is waterproof -- it also is not, nor does Seal Line say that it is -- although it does do a pretty good job of keeping things dry (I have one and it's an excellent bag).

Definitely, MEC is not being misleading.