The RonHill Advance 7 Running Shorts are lightweight breathable and offer a high level of wind resistance. Made of Activelite fabric the shorts are finished with a durable water repellent treatment and power mesh inserts to help you stay dry and comfortable when training. Additional features include reflective graphics inner bamboo brief and a back zip security pocket. - A.D. Activelite fabric Lightweight and breathable with a high standard of wind resistance Durable water repellent treatment to fabric Reflective graphics 7 inside leg (size graded) Inner bamboo brief Bonidex waistband with draw cord Power mesh inserts Back zip security pocket - ideal for MP3 player