Pearl Izumi Women's Pro In-R-Cool Tri Singlet

This singlet or tanktop is one of the best items in my running gear. The fabric is very lite, breathable and seamless, so no chaffing in 3+ hours of running. The pockets in the back are great for gels, and the inner top gives plenty of support.The fabric gives a very snug feeling, I was initially hesitant to order a size S but it fit perfectly, with a very slim fit. If you like your running tops a little less snug then I suggest you go a size up, since this is almost a "second skin" kind of fit.High price for a high quality product! This is race day gear!

One of their better (maybe best) design years for tri tops/shorts.

I have looked and looked for a tri top that fit well (i.e. stayed in place) and this one is perfect. I've worn it for a few ironman races as a bunch of shorter triathlons and it is now my go-to race top!