The Light Speed Compression Shorts with revolutionary Muscle Containment Stamping (MCS) technology are developed with a detailed understanding of the impact running has on the legs, reducing muscle movement, damage and fatigue for your best run ever.  Garment Benefits MUSCLE CONTAINMENT STAMPING (MCS)Muscle Containment Stamping (MCS) traces quadriceps; dissipating the load transfer on the knee joint during running. WAISTBAND STORAGEDrawstring waistband for secure fit with three back pockets providing storage for phone, cards and keys as well as gels. LIGHTWEIGHT FIRM SUPPORTPowerful, lightweight PWX fabric with circular knit 360-degree stretch, reduces muscle movement and damage whilst maintaining flexibility for ultimate sports performance. QUICK-DRYINGHigh quality, durable, moisture-wicking yarns outlast the competition and keep the skin cool and dry. BE SEENSignature reflective X logo on thigh provides visibility in low-light conditions. Garment Features  1. Compression short2. PWX highly powerful, lightweight and flexible compression fabric3. Quadriceps MCS4. Drawstring waistband for adjustable secure fit5. Large pocket for phone6. Zip pocket for cards and keys7. Mesh pocket for gels and other items8. Signature reflective X logo on thigh9. Flatlock seams to reduce chafe