Available in your choice of sizesHybrid mattress with energetic alternatives and eco-friendly materialsInnerspring construction with Energex FoamHypo-allergenic and eco-friendlyCoil unit distributes weight evenlyContains 100% wool product for under the stretch knit coverIncludes cotton Cloud foam replacement pad4-way stretch knit cover. Sleep soundly knowing you have the upmost comfort and eco-friendly design from the Wolf Harmony Energex Visco Hybrid Mattress. This hybrid mattress merges an innerspring unit and high-quality filling materials for superior comfort and support. The Energex Foam is an alternative to Visco foam, giving comfort over temperature ranges. This mattress also offers Wolfit which is a 100 percent wool product which cools when it's hot and warms when it's cold and goes under the stretch knit cover. Another alternative product is the included Cloud, a cotton foam replacement pad that is breathable, soft, and eco-friendly. Mattress Dimensions: Twin: 75L x 39W x 11.5H in. Full: 75L x 54W x 11.5H in. Queen: 80L x 60W x 11.5H in. King: 80L x 76W x 11.5H in.