I was surprised to feel how light weight these boots are.  They pack a warm punch with little bulk, I love that!  However... there is a seam on the tongue of these boots.  I laced these up and tied them the FIRST TIME and the seam on the tongue blew out.  The seam is hidden in the picture by the laces so you can't see it.  This seems like a design flaw.  Otherwise, great boot!  I would not buy again until they fix this tongue seam.