FLEXIBILITY: KEEN.BELLOWS FLEX is a proprietary technology that features built-in flex to allow bending where other boots crack and weaken over time; KEEN.BELLOWS FLEX requires 60% less energy to bend, making each step feel easier WATERPROOF: KEEN.DRY waterproof, breathable membrane keeps your feet dry and comfortable all day long by allowing vapor out without letting water in; KEEN uses PFC-free water repellency so that you leave the outdoors as good as you found them TRACTION & SUPPORT: KEEN ALL-TERRAIN rubber outsole provides high-traction grip in all environments with 4mm multi-directional lugs; Non-marking rubber outsoles leaves no trace when walking indoors; The stability shank provides support on uneven surfaces FIT & COMFORT: Environmentally preferred leather with ripstop mesh made of recycled plastic offers all-day comfort; The removable, PU insole and EVA midsole provides arch support; Speed-lace system and KEEN Comfort Heel Control for a comfortable snug fit CARE TIPS: Gently brush the footwear with a soft bristle brush or hand towel to remove loose dirt and debris; Stains can be treated by lightly rubbing a gum eraser in a circular motion over the location and lightly brushing afterward