I agree about Jansport. Their day packs have come through for me in the past. I recently replaced a 30 year old Jansport that easily saw more than 200 trail days.

I normally wouldn't stress much over a daypack, either, in that for most people a normal daypack load would be in the neighborhood of 8-12 lbs. including water, so that a waist belt and suspension just aren't required. But, when someone mentions a "first aid kit" for a group situation, that right there could be anything from a modest kit under half a pound up to a bells--and-whistles kit of several pounds, including a fair bit of bulk. When that person also casually mentions an intention of hanging stuff off external gear loops, then their load requirements get even murkier. Clarification seemed in order.