CEP Women's Progressive Night Run Socks 2.0 feature the same compression technology as the now-famous original CEP Running O2 Socks, but with updated styling. Graduated 18- 25mmHg of compression through the lower leg is scientifically proven to help maximize power, reduce fatigue and speed recovery time. Added to this addition is dynamic foot technology which gives you targeted compression to your ankle and mid-foot for increased support helping to reduce superficial swelling. These socks are great for use before, during the run and afterwards for recovery. The Night edition features a bright neon green color and reflective silver accents for improved safety in low-light conditions.