Description:UPPER: BREATHABLE UPPER FEATURES A DYNAMIC MIDFOOT SADDLE, SEAMLESS CONSTRUCTION, A DYNAMIC INNERSLEEVE AND AN EXTERNAL HEEL COUNTER FOR COMFORT AND SUPPORT. MIDSOLE: LUNARLON CUSHIONING SYSTEM WITH A "BOTTOMLESS" CARRIER CONSTRUCTION AND THE DYNAMIC SUPPORT PLATFORM PROVIDE ADAPTIVE SUPPORT AND PLUSH CUSHIONING. OUTSOLE: GENDER-SPECIFIC FLEX GROOVES PROMOTE A NATURALLY EFFICIENT STRIDE, BRS 1000 AT HEEL, ENVIRONMENTALLY PREFERRED RUBBER EVERYWHERE ELSE. 11.3 OZ (M10) PROFILE: THE CUSHIONING, ADAPTIVE SUPPORT AND ACCOMMODATING FIT THAT YOU NEED, WITHOUT UN-NECESSARY EXTRAS. ENJOY YOUR RUN WITHOUT THINKING ABOUT YOUR FEET.