The Medela Keep Cool™ Sleep Breathable Maternity & Nursing Bra will help keep you feeling cool and fresh while giving you gentle support throughout your pregnancy and nursing journey.Medela’s Keep Cool™ Sleep Bra features a wireless and seamless full racerback with breathing zone for fresher, cooler nights and comfortable, rejuvenating sleep. New quick dry technology helps to balance your body temperature while offering you support and comfort.Our 4-way Adaptive Stretch™ technology will see your bra grow with you and extend from pregnancy through nursing – keeping you cool and dry throughout your journey despite your fluctuating body temperature and keeping you supported and comfortable while you sleep.