Lululemon Cool Racerback II in “Night View White Black” - Material: Luon Light

From Lulu: This versatile racerback was designed to stay put and out of your way while you're on the move. Made with Light Luon® fabric that is lightweight, soft, sweat-wicking, and four-way stretch. light luon® Light Luon® fabric is a lightweight version of our signature four-way stretch, sweat-wicking Luon® fabric lightweight sweat-wicking four-way stretch cottony-soft handfeel naturally breathable features Designed for: Yoga Lycra®: Added Lycra® fibre for stretch and shape retention Tight fit: Lets you move without restriction Mobility : Racerback cut for full range of movement