Although unused, I found some sun discoloration upon opening. It's only on a portion of the back, so it could still be used as an inner layer. Unused. 100% cotton heavyweight long-sleeved T-shirt, size M. - Brand: Convenience Wear - Model Name: Long Sleeve T-shirt - Size: M - Material: 100% Cotton - Silhouette: Heavyweight Thank you for viewing. It will be shipped flat via Yu-Packet Post.