New Balance Womens WR904LW 904 Low Profile Training Shoe Running A lightweight low profile training shoe that provides added medial stability through our TS2 posting while maintaining a smooth responsive transition. Strobel Lasted (PL-1) System Component amp; Benefit:Abzorb: NB\\s top of the line foam material with excellent cushioning and compression set properties. Acteva Ultra Light Midsole: Premium ultra light weight midsole with optimal compression set properties. Ndurance Outsole: Provides long-wearing durability. NLOCK Support: Designed to provide upper midfoot structure and enhanced support. Stability Web: Provides midfoot support and torsional stability while reducing weight. Transitional Support System: Provides optimal support while enhancing transition from heel strike to forefoot. Sure Lace: Secure shoe laces provide added midfoot support and keep the shoe snug around the foot. LIGHTNING DRY liner keeps your feet dry and comfortable. Seamless Phantom Liner reduces the weight of the shoe plus enhances the comfort and fit. Dual Density Collar uses both a softer density foam against the foot for cushioning