From knitrowan.com:
Using our lovely Felted Tweed yarn, a soft blend of 50% wool, 25% alpaca and 25% viscose, this v-neck tank for men is ideal for layering. It was designed by Martin Storey and features a textured pattern that shows of this rustic looking yarn perfectly.

Finished Measurements:
Back width: 17.5(19.5, 21.5, 23.5, 25.5, 27.5) 45(50, 55, 59.5, 65, 70) cm
Finished length: 24.5( 25, 26, 27, 27.5, 28.5)“ 62(64, 66, 68, 70, 72)”

Yarn used:
Rowan Felted Tweed
Shade 184 Celadon - 5(6, 7, 7, 8, 9) balls