Jamieson, Fausset and Brown on Exodus 28:39

39. coat of fine linen--a garment fastened at the neck, and reaching far down the person, with the sleeves terminating at the elbow.

girdle of needlework--a piece of fine twined linen, richly embroidered, and variously dyed. It is said to have been very long, and being many times wound round the body, it was fastened in front and the ends hung down, which, being an impediment to a priest in active duty, were usually thrown across the shoulders. This was the outer garment of the common priests.