Lululemon Beat The Heat Tank Too Strappy Back White Size 6 We designed this tank with a built-in bra—easy access to run essentials keeps us focused on our pace. Light Luxtreme® A lightweight version of our Luxtreme® fabric, this comfortable, sweat-wicking fabric is four-way stretch, feels cool and fits like a second skin sweat-wicking four-way stretch fits like a second skin cool smooth handfeel lightweight LYCRA® Added LYCRA® fibre for great shape retention stretch great shape retention long-lasting comfort COOLMAX® Soft COOLMAX® liner wicks sweat away from your skin sweat-wicking soft