Sony Xperia SP Armband

This is a remix of makermichael's Iphone 5 Lifeproof Armband, adapted for the Sony Xperia SP. The phone slips in easily and stays put, but the side arms are a bit too high because the sides of the Xperia are thinner than the rest of the phone.
I included the Sketchup file so you can easily adjust it to your needs.