SOL'S TUNER, UNISEX T-SHIRT, 100% combed ringspun cotton, Neck tape Ribbed round neck Short sleeves Cut and sewn Comfortable fit, Being in the garment trade for over 30 years, we are looking for quality, transparency and sustainability in our cotton selection. This is why, we decided to use US grown cotton, and the SOL’S TUNER t-shirt is labeled COTTON USA™. For more information : https://www.cottonusa.org. Specific attention has been brought to garment fitting. The SOL’S TUNER has a trendy retail fit. We have gone for US sizing to offer a more universal fit. Product quality performance after domestic care: we are maintaining retail quality parameters which involves preshrinkage of fabric, twist control and lowest colour change after repeated wash cycles. We are also complying with the most reliable and consistent supply chain standards in order to meet the largest Branded Product Licenses requirements.About sizes matching, please refer to the size chart in the product documentation section.