Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Leaks.....

I have several pairs of Reefs...hands down the best sandals out there..but I will be darned if these things leaked after the first fill up..didnt know till I was headed to the Pearl Jam concert...filled a little Jamesons in there..and put them back on...drip drip drip...other than that, they are a very comfortable sandal...but reef makes better utility sandals...the bottle opener ones, stash box, fuzzy and the golf ones are way better and useful than the flask....shop around...