There are many SPORTS armbands on the market and some are good and some simply don't work. This armband is one of the best that I have seen, it is made from a super-light neoprene material that is superbly flexible, meaning that it is very comfortable to wear. This is a medium size and does not have an excessive amount of strap that gets in the way, for an average size upper arm this band is perfect. There is a small keyholder in the pouch as well so if you want to take out just a house key, you can. There is also a reflective surround for road safety ensuring visibility on the road. I am so confident that you will like this SPORTS armband that if you don't just let me know and you can send it back, postage paid by me for a full refund. If you want to use your iPhone in the gym or for jogg