Arc'teryx Mens Norvan LD 4 GTX ShoesBlack Hiking Sneakers Dual density midsole material and construction combine cushioning with lasting shock absorption and support for all day comfort and stability on rugged terrain Lacing system provides a smooth pull and secure midfoot fit while preventing backslip Tongue pocket secures the laces, eliminates lace bounce, and prevents snagging Flexible external frame wraps the midfoot for a secure hold that prevents forward slide and toe bang