M and L size T-shirts made of breathable AIRism material. - Brand: UNIQLO - Model Name: AIRism - Size: 1 each of M and L - Chest Size: 88-96 cm - Material: Polyester Navy The fabric is like thin underwear. Thank you for viewing. I bought these for my son to wear under his uniform, but he preferred a different color, so they've only been rinsed. ⚠️ Sizes are M and L. I thought I bought 2 L sizes when I purchased them, but I realized this when listing them.