The Galaxy Not II is a pretty decent Android device. It has a 5.55″ high resolution display and has a quad core 1.6 GHz processor. Carrying such a big phone everywhere you go without a case is not smart. You could easily end up damaging your phone. These 5 Samsung Galaxy Note II cases are more than capable of keeping your device protected:
Urban Armor Gear Impact Resistant Case for Note II: protects your device against impacts. It has a screen protector too.
iSee Case Hybrid Kickstand Rugged Case: combines soft and hard materials to provide your phone with double protection. It has a built-in kickstand also.
Wydan Rugged Case for Galaxy Note II: a holster, kickstand, and belt cover solution for your phone. The belt clip rotates for your convenience.
Samsung Galaxy Note 2 Flip Cover Case: a flip cover case that provides protection against bumps and scratches for your smartphone.
Ionic GUARDIAN Armor Case for Samsung Galaxy Note II: an affordable tough case for your phone. It improves your grip and offers full protection for your Galaxy Note II device.
There are other cases you can pick up to protect your smartphone. The above products are fairly affordable and do the job though.