Tree of Life T Shirt Viking Celtic Knot Spiritual Symbol Tee Solid colors: 100% Cotton; Heather Grey: 90% Cotton, 10% Polyester; All Other Heathers: 50% Cotton, 50% Polyester Imported Machine wash cold with like colors, dry low heat This tree of life t shirt represents the Celtic and Viking spiritual traditions. Also known as the phylogenetic tree, the yggdrasil, world tree and the tree of knowledge. In this graphic tee you'll find the beautiful tree of life with a root system of sacred geometry known as celtic spirals or the triskele. Makes a great gift for anyone with a connection to the ancient Celts or Vikings. Lightweight, Classic fit, Double-needle sleeve and bottom hem