Put your run into overdrive when you crank up the intensity with the light and swift Saucony Endorphin 3 Racing Shoes! Predecessor: Endorphin 2. Surface: Track. Differential: 0 mm. Upgraded woven upper locks in the foot for long distance comfort from Mile to 10k . Lace-up closure. Thin comfort tongue and contoured collar. Breathable synthetic lining offers a great in-shoe feel. Thin, molded foam insole. SSL (Saucony Super Lite) EVA molded midsole maximized rebound and durability while minimizing weight. Durable rubber outsole with a 4-pin spike plate provides enhanced traction and abrasion resistance. Imported. Measurements: Weight: 5 oz Product measurements were taken using size 12, width D - Medium. Please note that measurements may vary by size. Weight of footwear is based on a single item, not a pair.