great battery back but fragile

I bought it for my iPhone 6, and is perfect as a spare battery, and more with the same recharges my phone cord, which is rare. Easy to install, a button to charge the phone or battery. Very pretty, and really not expensive, fell by 3 times and against already cracked everywhere, if it falls face screen, it will not be protected. So if you tend to drop it often, it is better a shell that is not plastic like it or not then you really use that to recharge when you are without battery and change as soon as it is full.