We love our new mattress. The quality is great. We had a really hard time finding a quality 4 inch mattress,as most mattresses are 5 inches or above. My twin son is 18 months, and a big climber. WeWe love our new mattress. The quality is great. We had a really hard time finding a quality 4 inch mattress,as most mattresses are 5 inches or above. My twin son is 18 months, and a big climber. We needed a lower mattress to prevent him from jumping out of the crib too early. He is very athletic--even though the crib is on the lowest setting. Every inch counts for us. Eventually, we will get crib tents, but didn't want them at 18 months! With twins, we need to keep them in their cribs as long as possible. They are like two mischievous (yet adorable) little elves. Into everything! Thank you for saving us with this wonderful mattress!"..."Read more