Sun Patches block 99.8% of UVA/UVB rays with our patent pending material – UPF 50+ silicone. Our high-quality silicone not only protects the skin from sunburn and windburn, but it’s been designed to be ultra-thin for all-day, second-skin comfort. Each patch is reusable 10x by simply rinsing with water and air-drying to reactivate the 100% silicone adhesive gel which is hypoallergenic for sensitive skin and completely latex-free. Unlike other “sticker” sunblock that is made with fabric tape, Sun Patches are reusable, water and sweatproof and last all day to keep extra sun-sensitive areas that need targeted protection covered.