Asics level 1 ss running topdesigned to improve your posture when you run the unique muscle support technology in this half zip top helpsincrease your range of shoulder movementand open up the chest for easier breathing it means youll take in more oxygen helping to improve your performance during a run and speeding your recovery afterwards featuresmaterial 100 polyesterkeep dryon your run with motion dry technology to keep you comfortablestay safewhen you run on the road with 360 degre