PWRRUN cushioning provides springy energy return and plenty of durability. Foundation Platform provides a stable, wide base. Orthotic-friendly sockliner provides ultra-plush step-in comfort, or can be removed to accommodate after-market insoles. TRI-FLEX outsole optimizes flexibility. FORMFIT hugs the foot in 3D comfort and delivers our most personalized fit yet. Engineered mesh toe box is spacious to let feet splay and breathe. 3D Support Frame adds additional security at the heel. Weight - 12.5oz (354g). Offset - 8mm (35mm / 27mm)