This version of Grove has a BUGdri membrane that keeps your feet dry during those longer days out. The water repellent high shaft in felted wool is made from scrap from Woolpower's clothes production and the upper is made in DriTan leather. A long medial zipper makes Grove easy to take on and off. Soft bluesign fleece lining and insock made from recycled wool and Bloom algae foam make the insulation capacity really good. The wide last create a super comfy feeling when walking. Carbide studded BUGrip outsole gives confidence on ice and snow but walks completely civilized on pavement and other surfaces.