Belkin - EaseFit Plus Armband for Apple® iPhone® SE, 5s and 5 - Black
Keep your Apple iPhone SE, 5s or 5 protected while you work out with this Belkin EaseFit Plus armband, which features lightweight neoprene material that resists moisture damage for durability. The adjustable strap provides a secure fit.
The case may work if you don't buy a protective cover. But like most people I bought a thin plastic cover to protect the iPhone if I drop it. With the slight increase in size, the Belkin - EaseFit Plus Armband for Apple iPhone 5 does not fit. I will return the product.
Belkin - EaseFit Plus Armband for Apple® iPhone® SE, 5s and 5 - Black
Keep your Apple iPhone SE, 5s or 5 protected while you work out with this Belkin EaseFit Plus armband, which features lightweight neoprene material that resists moisture damage for durability. The adjustable strap provides a secure fit.
will it fit with an ottorbox commuter case?
No it will not. I have a smaller case than the otterbox, and the iphone will not fit.