Instruct: Classify Amazon reviews into positive or negative sentiment
Query: moo tubes

moo tubes arrived and are very different in size and much smaller than i assumed. the ones at my local pet store are more than double the size for not much more money, so i assumed these were the size of the ones at my expensive local pet store. i was disappointed at their small size and, very unhappy with their varied sizes. some were half the diameter of the one in the picture and with two dogs, if you dont give them equal sized products, one finishes first and then fights with the other for theirs. Consistent size does matter with doggies. these are about three bucks each. Petsmart has ones that are more than double the size right now for 2.50 each on sale and they are only 3.50 each regular price. i wont be buying these again.