Barronett Blinds BC350BW Big Cat Pop Up Portable Hunting Blind, Backwoods Camo

Is this water/rain/snow proof?

I hunt in tall trees I can use it for this or only for horizontal shots

Does it have a back pack to carry it and how heavy is it?

Can someone tell me actual floor dimensions of this blind? I'm going to build an elevated platform. Is it really 70"x70" as advertised?