Jackman GG Sweat Crewneck T bird GG Sweat Crewneck(S 07:Black): ALLjackman GG Sweat Crewneck(XXL 263Ink Blue): ALLjackman Jackman GG Sweat Crewneck herbie ONLINE SHOP GG Sweat Crewneck Jackman GG Sweat Crewneck herbie ONLINE SHOP. Ink Blue The material is made from No. 10 for the front yarn and thick No. 7 for the back yarn, giving it a substantial and heavyweight feel. GG, refers to material with a highly grainy pattern. The grainy texture is the result of using coarse, decoratively twisted threads for the outer yarn. To ensure this item can be worn for a long time, the seams have been reinforced with flatseam stitch, it is also comfortable structure. 100% COTTON Made in Japan