HEATTECH EXTRA WARM (Very Warm) XS size, gray long-sleeved innerwear Although it's labeled XS, it feels like a size M. It's a U-neck, so the neckline is wide, which is recommended for those who don't want it to interfere with their outfit. There are small pills from rubbing under the arms, but they are almost unnoticeable due to the original material. I had no problems wearing it as an inner layer. No tears or rips. Same-day shipping available. Shipping via Yuu Yuu Mercari. Feel free to comment.☺︎ - Brand: UNIQLO - Model Name: HEATTECH EXTRA WARM - Size: XS (Bust 74-80cm) - Material: 46% Rayon, 30% Acrylic, 19% Polyester, 5% Polyurethane - Color: Gray