I've had several covers for my iPhone and most come with a magnetic fastening, which affects the GPS. However, this one has a press stud fastening which resolves this issue and is well built. It also holds the phone very securely and it matches the white iPhone perfectly. I would highly recommend.
After my three year old boy went through 3 plastic trolleys. We decided to look for something more sturdy that doesn't break within 5 minutes. We're very impressed with the above item and it fixed together very securely within 10 minutes. I would highley recommend this metal trolley, if you have a child who likes to play rough.