A revolution in all-weather running technology. The Effusion is crafted with the perfect combination of body-mapped fabrics: windproof panels to block the wind where it hits and super-breathable stretch panels to dissipate perspiration and excess heat. Strategically placed knit panels for increased breathabilty and mobilty. Internal media chest pocket with velcro closure. Face fabric: windproof and water resistant. One-handed hem drawcord seals in warmth.