Project 1 One Elite Women's Run Singlet Product Details A lightweight and functional racing singlet made with light technology fabric and mesh. size XS|S|M|L|XL Product Features + Slim racerback for maximum freedom of movement. Lightweight 96gsm run fabric for maximum breathability and moisture wicking. + Ultra-lightweight 3D 80gsm knitted mesh back panel for maximum breathability and heat dissipation + Contains xylitol for a cool feel on the skin. + Bonded side seams for a low profile and comfortable fit.