Two-Piece Midsole System: Primo Foam - Plush, lightweight cushioning for impact absorption; ENGAGE Foam - High-resiliency support foam for structure and stability; Breathable Engineered Mesh Upper: Lightweight construction with 15% recycled yarns; Midfoot Tongue Wing Construction: Enhances lockdown, fit, and stability; Anatomical Tongue Design: Reduces pressure and improves comfort; Ortholite X-40 Insole: Removable, moisture-wicking, breathable comfort; GEKKO GRIP Forefoot Rubber: Durable traction for confident toe-off; H.A.R.T. Rearfoot Rubber: High-abrasion rubber for extended durability; Reflective Heel Stripes: Increased visibility in low-light conditions; Padded Collar Lining: Soft comfort from first step to long-term wear; Weight: 7.6 oz (US W8) / 216g