I like the fit and style of the product very much. Close but not too close to the body. The fabric is light and I find appropriate down to about 10 degrees weather. It's an excellent basic running shirt.
I love these t-shirts training tops. I own six of them at this stage. They are really comfortable to wear and so quick drying. I wear them hiking in summer, have worn them on the Camino in Spain and always wear them in the gym and spinning classes.
The fabric feels like cotton but is actually 100% polyester hence is quick to dry. Size fits true to size (unlike some Adidas that require me to order one size smaller), although a tad too long in my opinion.
As the labels say on these, they aren't cotton but they feel just like it. As such they are lighter than cotton, dry faster, don't deform or fade as quickly etc. They still stretch out a bit though, as any material this thin, even polyester, will. I like the cut on these better than the previous incarnation of sports essentials t-shirts--these prime shirts aren't hourglass shaped and the sleeves are a bit longer. They fit true to size--buy what size you normally would on a T-shirt but be aware these won't shrink up in the dryer. The dry dye feature on these isn't a quality of the fabric so it may not be like other dry dye shirts you may have, it is just an environmentally friendly process for colouring various fabrics.
Really comfortable top to run and work out in. Fits closely so looks good but isn't tight so it's uncomfortable. Material is light and doesn't retain sweat much making it great for sweaty gym sessions.