The original color of the wristband is white or off-white and it changes to purple or yellow or blue or pink when exposed to sun light. Colors will be deeper when the UV is stronger. Made of high quality materials,Lead free and latex free. It measures 8 inches x 0.5 inches that fits most wrists. Multiple branding methods including debossing, embossing, silkscreen, etc are available. Made from satin material, measuring For Adult, this custom uv sensitive color changing silicone bracelet. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Customization available: Print your logo or customize packaging and color schemes. Product Highlights: Portable, durable, practical for daily use.