Instruct: Classify the given review as either positive or negative.
Query: Not standard size

I purchased this matress at BRU today and am disappointed that I'll have to return it. It is about an inch shorter than the Sealy mattress my son is now using in his toddler bed. So, I definitely know it will not fit snugly in our old crib. Be wary that this mattress is not of standard crib size, it measures a little over 51 inches.