Clan Rattray (Tartans, Crest) and The Story Behind Scotstee Shop MacRae Tartan Polo Shirt Featuring Alba Gu Brath Family Crest Celtic I Alba gu brth Meaning, Origins, and Scottish Pride Today Fraser Tartan Polo Shirt Featuring Alba Gu Brath Family Crest Celtic I Choose Your Clan Custom Tartan Rattray Tartan Etsy. Product Detail: This new all over print t shirt features a relaxed fit for Men and Women. Made of 100% mesh cloth, this t shirt is durable, breathable and soft.?? 7. 05 Oz. 100% polyester. The neckband with multiple color selections cannot be customized. Double needle hemmed sleeves and bottom. Machine wash cold. The print on garment body is unable to fade.