Nation LTD Birkin Tank in Green. - size S (also in XS) Nation LTD Birkin Tank in Green. - size S (also in XS) 100% recycled cotton. Slub knit fabric. Made in USA. NATI-WS725. 3023RC. Nation LTD is a contemporary women's wear collection with a perfectly undone aesthetic. The line is mindfully designed in Los Angeles and based on the belief that the perfect t-shirt is the most versatile piece in the modern wardrobe. Known for their use of innovative fabrics, unexpected details, and eco-friendly practices, each piece from Nation LTD is beautiful, comfortable, and perfectly undone.