This time around, the top of the boot is mostly covered by the pant leg, so focus is on the uniquely ridged lower portion.
Except it’s not that unique.
While the original boots worn by Poe are suggested to have been made by UK company JD Williams (either the GroundWork or the Cushion Walk), it turns out there are numerous snow boots that share the same type of sole.
Publication of the Star Wars: The Force Awakens Visual Dictionary proved that Snap Wexley and Nien Nunb wear different boots than Poe. Instead of snow boots, theirs are black work bootswith a black cover run over the fasteners. The cover might be black leather or fabric, but it doesn’t look much different than a strip of gaffer’s tape.