?I know you have suffered much times fell off when you were in sporting. There were several protector in market. I am so lucky when you checking my product detail here. ? This armband is born for Freestyle Libre 1 & 2 & 14 days CGM, come with original physical design case and soft arm band material. Besides, we offer 3 sizes S, L and XXL cover from 4-22 inches, what’smore , if our current stock arm band size not fit you will, we offer every order with 1 opportunity for ask a customized size, only arm band, exclude protect case for Freestyle Libres. Length unlimited, Color available below: ??????????????? Notes: We produce it outside from US, thus after we receive your request, it might take 20 days to get to you.Multi-pourpose Use: Whether you are doing sports(yoga/running/hiking/ Jogging/Cycling /etc), party, dancer, it enable you make big moves. Stepless adjust length: you want it, you set it. Original 1:1 design: Fit your Libre sensor 1 & 2 prefectly, with back sides are curved design, fit arm curve perfectly too!. Apart from those 3D printer maker, we build it with premium ABS, which is burr-free! I think many consumer have had bad experience in that, please rest assured, it touch nice. Ultimate ABS protector case with comfortable bands, its quality much higher than other libre sensor cover bands, especially it is free-silicone, friendly for those who are allergic to silicone.