Visco elastic foam is another term for memory foam. It is a blend of polyurethane foam that was developed for airplane cushions by a NASA contract in the 1970s.
The difference between visco elastic foam and other types of polyurethane foam is its slow response and low resistance. Its soft surface allows for contouring and its slow response lowers bounce.
Visco elastic foam, like all polyurethane foam, is made from a blend of substances and has a tendency to off-gas. Those with lung sensitivities should do additional research about the quality of foam to ensure that it won't aggravate them.
Pros: Contouring comfort, competitive pricepoints, and widespread options.
Cons: Sagging and off-gassing problems with lower quality foams.
Wool is made of sheep fur. It is sheared from the sheep multiple times in their lives.
The most famous kind of wool being used in mattresses is New Zealand wool because of its attention to quality.
Wool is commonly found in the cover or as a comfort layer. As a comfort layer, it is packed tightly in the mattress so it can add softness to the top layers of the mattress. Some untreated wool may have a slight natural barnyard smell. It is also a natural fire retardent.
Pros: Wool is an all natural alternative to other types of comfort layers.
Cons: The quality of wool bedding is entirely dependent on mattress craftmanship. If the packing is too loose, there can be quick sagging and durability issues.
Overall Score:
Visco Elastic Foam: 9.3/10
Wool: 9/10
Comfort:
Visco Elastic Foam: 9.4/10
Wool: 8.9/10
Softness:
Visco Elastic Foam: 9.5/10
Wool: 9.3/10
Cooling:
Visco Elastic Foam: 8/10
Wool: 9.2/10
Hypoallergenic:
Visco Elastic Foam: 8.1/10
Wool: 9.3/10
Odor:
Visco Elastic Foam: 8.4/10
Wool: 9.1/10
General Support:
Visco Elastic Foam: 8/10
Wool: 9.2/10
Eco-Conscious:
Visco Elastic Foam: 8.5/10
Wool: 9.3/10
Price Value:
Visco Elastic Foam: 9.4/10
Wool: 9.2/10
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