Jackman Dotsume Rib L/S T-Shirt BirchThe Jackman Dotsume Rib L S T Shirt Birch is made from American 20 2 cotton using a loop knitting machine, taking time to reach the maximum density. By knitting slowly with a loop knitting machine, the fabric is evenly stitched and will not shrink or warp even after repeated wear and washing. This T shirt is not see through, makes it hard to see your body line, and doesn't show sweat stains, giving you a sense of security. At approximately 11. 9