UNIVERSAL ARMBAND EXTENDER. Many of us know the story - you finally get that great armband you've wanted and then you realize - Wait a minute - the band is not long enough! Those of us blessed with large arms deal with this sort of thing all the time. But no worries - we've got you covered! LENGTH - This useful strap extends your max armband size by 6 inches. We encourage you to check the circumference of your arm. If you've got Arnold sized biceps you should probably take a tape measure to confirm - otherwise I think you will be ok. COMPATIBILITY - This extender is universally compatible and can be used with most of the popular armbands on the market. If you're in doubt post a question and we'll get back to you. MATERIAL - Made from soft lycra, nylon and velcro for a gentle but durable fit. It makes a great accessory for yourself or as a gift.