Get this, there used to be a time when mattresses were stuffed with straw, rags, old bird parts, or rusty pieces of metal, and weren't even close to the level of safety or comfort you see in mattresses like the Moonlight Slumber Little Angel All Foam One Firmness Crib Mattress. I know, right?! Today, you can get one mattress that has a solid foam core, fire-resistant barrier, cornered edges, and a waterproof nylon cover. Not only is it not filled with all manner of dangerous objects, this mattress is PVC, latex, and phthalate free, and has sonically-welded, anti-microbial seams. This mattress has a weight limit of 250 lbs.