keyfix Running Key Holder XL, Fitness Activity Wristband for Keys While Running Swimming Cycling, Jogging Wrist Band New and unique globally, the keyfix bracelet fits (almost) any wrist. The size is about 15-23cm. The highly elastic rubber form securely holds virtually every front door-, house-, letterbox-, lock- or hotel key. Each keyfix bracelet is heat and cold-resistant and 100% weatherproof - so get out and go! Super Soft, extremely lightweight and breathable, keyfix bracelets are barely noticeable when worn. The high-quality bracelets are wash machine and dishwasher safe - so go ahead and sweat!