First, let me just say that the water bottle is beautiful and arrived in perfect condition.  Even the stainless steel on the inside is shined to a mirror finish.  I have the teal one and the color is gorgeous.  As for utility, the top flips up with the push of a button so you don't need to unscrew the whole top to take a sip.  The mouth of the bottle is comfortable to drink from.  There is a lock feature to keep the button from accidentally being pressed to avoid possible spills.  Lastly the handle is big and easy to hold and then flips down to fold flat against the side of the bottle.  The whole thing is very slim, fits in cup holders, and easy to take with you anywhere.  And of course it keeps your drink cold all day.  I have owned a lot of dual walled stainless steel water bottles and this one is easily my favorite.