- Please find the size chart in listing photo before purchasing. We recommended measuring a t-shirt you already own to get the best fitting t-shirt. sizing up is also recommended! - Made with 100%, midweight (5.3 oz/yd² (180 g/m US cotton that feels soft to the touch and a great choice for any season. - Fabric blends: Heather colors - 50% cotton, 50% polyester, Sport Grey - 90% cotton, 10% polyester -