New Balance Men's MR749 Running Shoe Synthetic and mesh Rubber sole Moderate Medial Post - For those runs containing on and off road sections, to give you added stability Tighter Weave Mesh - Offers more durability and helps keep the foot in place better Stability Web - Provides the runner with torsional midsole stability keeping your foot firmly in place. Activa Lite Midsole - For superb lightweight and durable cushioning to absorb the shock of impact N-Lock - Offers comfort and support by keeping your foot secure and in place.