Round neck tank in an elegant racer back design with a cut and sew down front to create a unique gathered look. No need for a bra, it has an in-built one, just in case you wanted to get active, and guess what? It’s made of milk.. We can take a protein fiber (milk) and blend it with sustainable fibers developed from organic wood pulp of beechwood trees, which are spun into a yarn yet retain inherent properties and natural benefits. The result is a bio-based alternative to synthetics.. Product Info. sku. U1343. Activity. Loungewear. Collections. Womenswear. Fabric. Milkdal. Style. Tanks. Features. N/A. Cut. Baggy cut. Ecology. We can take a protein fiber (milk) and blend it with sustainable fibers developed from organic wood pulp of beechwood trees, which are spun into a yarn yet retain inherent properties and natural benefits. The result is a bio-based alternative to synthetics.