Buy on Amazon.co.uk : http://www.amazon.co.uk/gp/product/B004QZANPM?tag=animalisimo04-21
Gore Running Wear Men's Essential Reflective Logo Singlet - Black Medium
Thin and soft fabric
Minimized seams for less chafing
Flat-lock seams
Extra-long back
Reflective logo on front
Barely there singlet for every runner every day tight fit