Has plastic covering . Perfect for potty training time

"This baby crib mattress is a game-changer! Not only is it incredibly comfortable and supportive for my little one, but the waterproof cover gives me peace of mind against any unexpected accidents. The quality construction and materials ensure a safe and restful sleep for my baby, and the size fits perfectly in the crib. Couldn't be happier with this purchase!"

This mattress is perfect for my 5 month old. It fits in the crib perfectly, the firmness is exactly what it’s suppose to be for infants and the price was right!

Estoy muy contenta el colchón que compré es de excelente calidad y buen precio.

Firme y de buen tamaño.

So almost 2 years later from my last update, the mattress is STILL going strong. My daughter is now 2.5 years old and she is still using this mattress. We've dropped the mattress down and converted her crib to a toddler bed. We've had no issues with it losing it's support/sagging/having a dip. Structurally, there are still no rips or tears either. I couldn't be happier. I honestly believe this mattress is going to last until we convert her bed to a "big girl" bed.We're so happy with the product, we just purchased a 2nd one for our new addition coming up in November! If the quality is the same as it was 2 years ago, then I shouldn't have any problems! As promised, I am updating the review of this item. My daughter is now 3 days shy of being 6 months old. She was born prematurely in late February & since the day we brought her home, she has been sleeping exclusively in her crib, using this mattress.Based on my past research, I was confident that this mattress was the right choice and I stand behind it 100%. We've been laying our daughter in the same position and it still holds it's shape (no impressions/sagging). I like that it is easy to clean and during each crib sheet change, I wipe it down with either Lysol wipes or a damp cloth & follow it up with some Lysol. Of course, I let it dry before putting my baby back onto it.Another tidbit to add is that I'm using the with the mattress and have absolutely zero issues. Movement is detected very well.There's really not much more to add other than I'm 100% satisfied with this product. I still can't believe how much it costs in comparison to the $100+ alternatives. This mattress is well worth the price you pay. My wife and I are expecting next spring, but as most parents do, they go ahead and get their furniture prior to the baby arriving. I've been reading baby books and various parenting forums on how to prepare for your child and my choices/opinions are based on my research. While I can't say whether or not my research is the "best way", it met every guideline I could find on baby mattresses.For references, the crib we purchased was the . Without further ado, here are the reasons why I chose this mattress...PASSES FOAM RESILIENCY:For babies, there are two types of mattresses out there: foam & inner spring. Since the Safety 1st mattress is all foam, there are a few guidelines I read about in regards to baby mattresses. First and foremost is the risk of SIDS. To reduce your chances, the mattress must be FIRM. The softer the mattress, the greater the suffocation/SIDS risk. Mattresses aimed for older children/adults are typically much softer than those of baby mattresses. That's why baby mattresses tend to be on the firmer side. Regardless of thickness, the FIRMER the better. An easy test for resiliency of a foam mattress is to just use your hand. Press on the center of the mattress with your hand and then remove it. Take note of how soft it is and secondly, how quickly it regains the shape. The faster the "impression" recovers, the better. Sleeping babies will make impressions while laying on the mattress and if it's not firm enough, they can't change position and hence will get "stuck" sleeping in that position... which leads to suffocation & SIDS. Perform the same test at the edges as well (babies will start to move around as they get older and may end up on the sides/corners while moving around while sleeping).EASY TO CLEAN/STURDY COVER:The cover (vinyl) is made of hypoallergenic and free of phthalates and lead. It is easy to clean (stain/odor resistant) and tear resistant. Babies will have accidents (leaky diapers) and you want to be able to properly clean the cover to get rid of any bacteria or harmful organisms.FITMENT:Having purchased the crib mentioned prior, I was worried about fitment issues. Based on Babycenter.com, a baby's mattress needs to be snug with no more than 2 fingers of space between the sides and the mattress. Too much space can lead to entrapment hazards and even worse, suffocation of your baby. By my web research on our crib, another owner mentioned that this mattress was a *PERFECT* fit. And so, I bought it knowing that it is the right size for my crib.AMAZON RANK:Of all the mattresses out there, this one is ranked #1 on Amazon. Originally I was going to get just because of the name but after reading both, I decided I could get the Safety first. Currently the average rank for this mattress is 4.5 stars with 649 reviews at the time of this writing. Compare this to 84 reviewers of the Simmons mattress... personally I'd trust the opinions of 500+ more random people.Hope my review helps!

FINAL UPDATE: 3/21/2015Hey everybody! I just wanted to provide another (and likely the last) update to the ongoing mattress review. We upgraded to a big girl bed months ago, however, the mattress was still in great shape, so I donated it to a friends who were expecting a "surprise" baby. Well, said baby caught a viral bug and got sick in the crib. Today, I got a call from the mom RAVING about how resilient the mattress was. She cleaned with clorox spray and that was it. No stains, no odor, no nothing. I still love this mattress and think it will be one of your wises baby investments. I want to thank everyone for all of the comments, funny emails and questions! I welcome anymore anytime. Good luck with the kids! Six year olds are totally cray-cray, BTW ;)UPDATE: 2/3/2014Hi everyone! We just converted the crib to a toddler bed last week for a very sneaky and clever 27 month old. We still use this same mattress and we still adore it. Sheets are the same, blankets are the same, only now she can come and go out of bed as she pleases. No worries...her room has been "sweeped" for dangers and there is an additional baby gate at the door to keep Houdini safely inside. If anyone wants to check out my blog, it's loaded with this kind of thing plus a ton of other helpful (and humorous!) stories, how tos, reviews and how not tos! If you like it, please share with your friends as well as your internet friends...Thanks so much!! [...]UPDATE: 5/30/13This mattress is still AHHH-MAZING!! I say this because it has retained it's shape and form beautifully and if baby's diaper leaks overnight (and they will as they get bigger!) you can easily clean the mess. We use a waterproof mattress pad, but still, when everything is in the wash, I still give it a good wipe down. Baby loves it and she's 20 months now. One thing i really appreciate about it and you may not care about this, but since there are no springs, she has never had the urge to try and jump up and down on it and escape the crib.Also, some of you have asked about the size of the mattress and it is at least average crib mattress size, if not longer. I am paranoid by design and I never had one unsafe thought or experience with this mattress. I suppose if you are using an older crib or a HUGE one, you may have minor issues, but we use a solid wood crib to full size bed convertible type ($$!...don't even get me started on the cost of a good heirloom crib!), and nada...no problems.Feel free to contact me here with any questions. I was happy to see that so many people enjoyed my original review and I am more than happy to answer any questions- big or small- that you may have. I love this mattress more now then I did nearly two years ago and I am super finicky. For the price, you simply can't lose.________________________________________________________________________________________________________________________________________________________________________________________I ordered this mattress 2 days ago and it was on my doorstep this afternoon. I have to say that I am floored by the quality. This is for our second daughter (on her way) and our oldest used a mattress 2x this price and when I compared them side by side, I was blown away.Here's why:1. It's a dense, high quality memory foam with a waterproof cover on it (removable)2. Contrary to what other reviewers say, it's big; as a matter of fact, it's a good 1.5" longer than our brand name more expensive mattress that pales in comparison. The old one is like sitting on a series of crunchy springs and the new one is like sitting on a tempur-pedic with a non-crunchy waterproof cover.I did a lot of anal retentive research in this purchase and am shocked that this is the real price for this mattress. Don't hesitate on this one. It feels and looks very high end. You'll be glad I did all the psychotic research for you in advance.