From site: This 2-in-1 tank combines iconic strappy, open-back bra with a drapey, sweat-wicking fabric making it ideal for hot studio classes. seriously light™ luon Our sweat-wicking, four-way stretch Seriously Light™ Luon fabric makes moving a breeze seriously lightweight sweat-wicking four-way stretch cottony-soft features Designed for: Yoga Lycra®: Added Lycra® fibre for stretch and shape retention Built-in bra: Made with sweat-wicking Luxtreme® fabric Medium support: Intended to provide medium support for a C/D cup Coverage: Pockets for optional, removable cups (included) Relaxed fit, hip length: Layers easily and gives you room to breathe Great condition!! Smoke free environment Bundle to save Fast shipping