The sealed seams on the Timberland White Ledge boots create. a full, waterproof barrier.. . Waterproof, full-grain leather upperSeam-sealed for complete waterproof protectionPadded collar and tongue for a snug, comfortable fitGusseted tongue keeps out debris for irritation-free comfortCushioned EVA footbed absorbs shock and provides all-day. comfortLightweight dual-density EVA midsoleB.S.F.P.??? motion efficiency system guides your foot through. the four motions of your stride ??? braking, supporting, flexing, and propelling. ??? for an efficient, comfortable gait