This chunky vest is knitted from a blend of yak, RWS merino wool and alpaca with a portion of nylon, which provides firmness, strength and makes the knit more lightweight. Cut with a regular and slightly boxy fit, it is designed with ribbed details around the crew-neck, armholes and hemline.5 gauge, heavy knitThe wool comes from non-mulesed sheep and is certified according to the Responsible Wool Standard (CU810300) - an independent, voluntary standard ensuring that wool from certified farms is properly identified and tracked through all processing stages. The goal of RWS is to protect the sheep that supply the wool and the land on which they graze.