Undershirts are welcome by people. People can feel cool when wearing undershirts in summer. Some undershirts are made up of two separated layers of cloths which are stitched together at shoulders and sides while other undershirts are only stitched at shoulders having no stitches anywhere. Just like socks, undershirts are knitted in the round. Seams only exist in the sleeves and the shoulders.
The collar and hem are sewn quickly with special knitting machine. The special knitting machine is called as circular knitting machine. Circular knitting machine makes simple undershirts very quickly.
