your bookstore will probably have anything you need; although the prices there are probably inflated. You can pick one up at a medical uniform/scrub shop near a hospital for ~ $25 or so. Just get something long enough to cover yourself down to your fingertips (arms down of course). I managed to order a really nice 100% sanfornized cotton lab coat with cloth buttons from the UNC Chapel Hill bookstore Online. You enter your waist, other measurements, etc. and for ~ $40.00 you get a lab coat that will probably outlast your career. I'd pick up a cheap polyester one for now though.