How to use: Simply put on this base layer before your cycling jersey for a comfortable ride. It's designed to fit snugly under your other cycling clothes. Note: Although it's durable, avoid sharp objects that could damage the fabric. When you're done riding, don't leave it in a wet or dirty state for too long. Maintenance: Wash it with a mild detergent in cold water. Avoid using bleach or fabric softeners. Hang it to dry instead of using a dryer to maintain its shape and the quality of the merino wool.