I only tried it on once, but it didn't fit, so I haven't used it. It has been stored at home, so please refrain from purchasing if you are concerned. White T-shirt, size 150, using HEATTECH technology, with heat-retaining material for a comfortable fit. - Brand: UNIQLO - Model Name: HEATTECH - Size: 150 - Color: White - Material: 35% Acrylic, 30% Polyester, 24% Rayon, 11% Polyurethane Thank you for viewing.