The MagniLoupe Headband from Carson Optical is an adjustable soft rubber strap that provides comfort during extended use. For use with any of Carson Optical"s Loupe Magnifiers. The MagniLoupe headband is ideal to use for jewelers, printers, crafts and other hobbies. The MagniLoupe is backed by Carson"s One Year Limited Warranty. At Carson, we strive to make sure our customers are 100% satisfied with the quality of our products. We are so confident in our products that we back them with a One Year Limited Warranty! This Carson product is warranted to be free from defects in material and workmanship for a period of one year from date of purchase. Please contact Carson for additional warranty details.