CHICAGO MARATHON EDITIONBorn from the Chicago flag, this LIMITED EDITION marathon inspired style integrates all of the city's unique parts. Neighborhood stripes meet lake and river blues while red stars shine as a source of cultural identity.SET YOUR PACE ON FIREWant to feel faster? Meet the Endorphin Speed 3-a shoe that's the definition of swift. Designed with a new winged plate that helps support your run from toe-off to landing, it's everything you need to push your pace with ease.WHAT'S NEW?+ WE PERFECTED THE PLATE - A reimagined S-curve winged nylon plate centering and supporting your foot better.+ WE DID THE MATH - Updated geometry (5mm additional height and a wider midsole base), meaning more premium PWRRUN PB (yet lighter than the Speed 2), giving you a smoother ride, and additional spring for extra speed.+ FIT FOR GO-FAST DAYS - A fully redesigned upper delivering a comfortable fit.FEATURES+ SPEEDROLL Technology propels you forward effortlessly.+ Ultra-light and responsive PWRRUNPB (Pebax) foam cushioning gives you a light, fast feel.+ New S-curve, winged nylon plate returns energy and better supports you through daily training.+ Stay comfortable with a lightweight breathable mesh upper.+ FORMFIT design hugs every part of your foot for a personalized fit and feel.+ XT-900 rubber outsole pattern grips the road better.SPECS+ Category: Men's Neutral+ Offset: 8mm (36mm heel/28mm forefoot)+ Weight: 229g (Men's)Sustainability: This style is vegan and contains recycled materials