Foam mattresses are usually the least-expensive option and also the lightest. These mattresses are made of foam and have a plastic cover, which might make a baby feel hot during summer months. The plastic cover on foam mattresses is easy to clean. Foam mattresses are usually between 3 to 6 inches thick and weigh 7 to 8 lbs., although some mattresses made with memory foam might weight closer to 20 lbs.
Innerspring mattresses usually cost more than foam mattresses, but also last longer. These mattresses are made of coiled springs covered with foam. One side of the innerspring mattress is made of a layer of cotton and the other side is made of plastic for easy cleaning. According to BabyCenter, consider the number of coils and gauge when purchasing an innerspring mattress, choosing one with 135 to 150 coils and a gauge of 15.5 or lower.
Organic mattresses are made with all natural or organic materials, such as cotton or wool. Toxins and chemicals that could harm babies are not present in organic mattresses. For this reason many parents decide to spend the extra money on these type of mattresses. Organic mattresses come in both foam and innerspring; they also last longer and keep their shape better, but can be harder to find.
Hypoallergenic baby crib mattresses are the best option for babies who suffer from allergies or asthma. This type of mattress is more expensive, and according to BabyCentre, might be a luxury for most babies. Hypoallergenic mattresses include a quilted top layer that can be taken off the mattress. This layer can be washed at high temperatures, killing bacteria and dust mites. For this reason, hypoallergenic mattresses are also easy to keep clean when babies have accidents.