Silicone Security Rubber Bands for Bike, Motorcycle Phone Mount, Holder Simpra Universal Mountain & Road Handlebar Cradle Holder Tether, Bicycle Phones Holder Support, Only 2 PCS Band (Red-S)

I bought this hoping to use it to add grip to my iPhone 7, so it wouldn't slide out of my pants' pocket - I haven't found a slim case that isn't slippery. It does add some grip, but it also pulls on the sound button so it is always on vibrate. It also blocks the flash. And one corner keeps coming off. Now, I know this is not its intended purpose, so I am not giving it a mediocre review. However, for anyone looking for a non-slippery case substitute, this doesn't quite work.