Instruct: Classify a given Amazon review as either positive or negative.
Query: Makes 2 month old baby sleep 8 hours!!

I think my title explains this product perfectly. My 2 month old has slept 8 hours during the night for the past 3 nights and he's been consistently at 6-7 hours before that. I had a size smaller first and then upgraded to the larger size. He easily sleeps in it in his crib with no issues. Occasionally, he'll pop an arm out, but it's usually b/c I didn't secure the flaps tight enough. GREAT!!!