Are these waterproof?
The shell is waterproof and PU upper is water-resistant, can keeps feet dry in winter.
Is the liner and insoles removable?
No. Non-removable lining and insoles are more convenient to put on/off, and better warmth.
Do these keep warm well?
Yes, 500g thermolite insulation lining, unremovable thermal insole, insulation your feet warm.