Verified Buyer Reviewed by SJG from NYC on Thursday, June 30, 2016
This water bottle is pretty good. The valve locks but it's a twist so it requires two hands. Maybe not a big deal but I'm not sure it's any more secure than more standard style that you can unlock by pulling with your teeth. Also, there are indentations around the side that make it very comfortable to hold with the fingers and thumb on your right hand. When. You switch to your left hand it's a little awkward.