Sleek and modern, this Philip Stein Slim Sleep Bracelet® is fitted with an extra large band in ultra-soft microfiber, perforated to let the skin breathe at night. A glass window in the stainless steel case offers a glimpse at the Natural Frequency Technology® disc housed within, which is clinically proven to improve your sleep and overall wellness. It also comes with two additional interchangeable straps for your total comfort!