'A fixed-gear bicycle (or fixed-wheel bicycle, commonly known in the USA as a fixie) is a bicycle that has no freewheel, meaning it cannot coast — the pedals are always in motion when the bicycle is moving.
The sprocket is screwed directly onto a fixed hub. When the rear wheel turns, the pedals turn in the same direction.[1] This allows a cyclist to stop without using a brake, by resisting the rotation of the cranks, and also to ride in reverse.'
Talking about the bike in question, the Schwinn cutter is not exactly light weight with its high-ten steel frame, doesn't have quick releases for the wheels, and isn't as glamorous as some of her other cousins. But still, she could just be enough to unleash the fixie man in you:)
Specs and pics below
http://www.schwinnbike.com/usa/eng/Products/Urban/Fixie/Details/1377-S10CUT-Cutter