this cover fits perfectly allowing you to easily use the side buttons but also giving your phone plenty of protection against drops. I bought one for my husband and was impressed with his so bought this one for myself when I got the same phone.
I love this bottle its so easy to open much better than the pull top ones. It also doesn't leak (provided you shut the lid before putting it in your bag which I've only done once so far) It holds enough to do me through work and also has grips so it doesn't slip out of your hand at all.
I bought this for my husband as he is always complaining about having to untangle his headphones after they've been in his pockets. He likes it and uses it daily. It took him a bit of getting used to but he hasn't complained since he got it.