Sunfriend UV wristband encourages healthy sun exposure without sunscreen

... surrounding the amount of time we spend in the sun. Although we rely on exposure to sunlight to provide us with vitamin D, a lack of protection from harmful ultraviolet (UV) rays can lead to skin cancer. The UVA+B Sunfriend is designed to let users ...

http://www.gizmag.com/sunfriend-uv-wristband/29979/