Triathlon tops
A triathlon top is the upper part of the two-piece version. It is worn over the triathlon shorts and fits tight enough not to be bulky in the water.
Compared with a one-piece suit
The two-piece is more practical for toilet stops and can be combined freely if the top and shorts need different sizes. The one-piece suit, on the other hand, fits more smoothly and does not ride up at the back.
Details
Back pockets are flat so that they do not bounce on the run. The zip is usually at the front and can be opened for ventilation on the bike leg.
