This review is from: kolcraft pure sleep therapeutic 150 Crib Mattress (Baby Product) Do not purchase this mattress. It is way too soft and provides no support. Find product information, ratings and reviews for a kolcraft pure sleep therapeutic 150. Kolcraft customers questions and answers for Kolcraft Kolcraft Pure Sleep Therapeutic™ 150 Crib Mattress. Read questions and answers real customers have contributed Buy kolcraft pure sleep therapeutic 150 Crib Mattress at an everyday discount price on Overstock.com! Get everyday free shipping over $50*. Read some product reviews