Is this tee good for hot-weather running?

Yes. The 95gsm fabric is very light and sweat-wicking, which suits warm-weather runs and treadmill sessions. It offers little insulation, so it is not a cold-weather layer.

It has a regular fit. Gymshark's model at 5'8" wears a size S, so the cut is neither tight nor oversized.

Will the reflective details keep me visible at night?

The trims and logos are reflective, which improves visibility in low light. They only help where they are exposed, so a jacket over the top covers them.

What is the fabric made of?

It is 54% nylon and 46% elastane at 95gsm. The elastane content gives it noticeable stretch compared with plain polyester running tees.

How should I care for it?

Wash it cool and avoid fabric softener, which coats technical fibers and reduces wicking. Air-dry it to protect the stretch and the reflective trim.

Is it worth choosing over a basic polyester running tee?

It adds reflective detailing and a stretchier nylon-elastane knit that basic polyester tees usually lack. If you only need a cheap training shirt for daylight runs, a plain polyester tee covers the basics.