Thinking of dabbling in jujutsu, maybe a little taekwondo, or even kickboxing? Whether you want to energize your life with some martial arts training or keep it classic with your everyday routine, the Icebreaker Sprite Racerback Bra is ready for action. Without limiting your range of motion one bit, this supportive racerback bra is crafted from a durable merino blend that keeps you cool when hot and warmer when chilly. Magic? Maybe. Completely natural and biodegradable? Yes!