Breathable and protective synthetic and mesh upper; Dual density Fresh Foam X midsole foam with approximately 3% bio-based content delivers New Balance's most cushioned Fresh Foam experience for incredible comfort; Midsole has a softer top layer for comfort with a firmer bottom later for stability on uneven terrains; Vibram Megagrip outsole with Traction Lug technology and a revamped tread pattern provides superior grip in wet and dry terrain; Toe Protect technology helps protect feet from rocks, roots and debris; Gusseted tongue offers a secure fit and helps keep debris out; Best for Trail Running, All Day Wear; Heel/Toe Drop: 4mm; Weight: 253 grams (8.9 oz)