Let’s talk about some of the most popular materials you’ll find online mattresses. Although I have listed them separately, many beds include several types of materials, as is the case for hybrid beds that feature coils and foam layers. 

Memory foam: Memory foam is among the most popular online mattress materials. It’s loved by people who want their beds to contour to their curves and create a cocoon around them as they sleep. The trade-off is that some memory foam is dense and hard to move around on. 

Polyurethane foam: Another type often used in mattresses is polyurethane foam. It's not quite as dense and slow-moving as memory foam; it has more of a neutral feel that’s not very polarizing. It’s the classic foam feel that the average person will like. 

Latex foam: This type of foam is often naturally made by harvesting the sap of a rubber tree, although synthetic latex is also popular. Latex foam is antimicrobial and hypoallergenic, making it a popular option. It’s a responsive and bouncy material, but it tends to be firmer than other types of foam. 

Pocketed coils/innerspring: To give mattresses durability and support, many brands add pocketed coils or an innerspring to their beds. Pocketed coils tend to isolate movement a little better than traditional inner springs, but both are great options for people who want a bed that’s going to last. 

Hyper-elastic polymer: You’ll only find hyper-elastic polymer in Purple mattresses. It’s a supportive, gel-like material that’s super stretchy. The Purple grid gives the bed a unique feel you won’t get anywhere else. It’s almost like you're buoyant when you lie on the bed. 

Organic cotton/wool: Many online organic mattresses include organic cotton or wool in their covers, giving the bed a soft feel.