King Koil Mattress Review. The final four mattresses are included in the iMattress collection. The G10 Firm and G12 Plush are memory foam mattresses, and the XS 10 Hybrid Firm and XS 50 are hybrid mattresses.

The G10 Firm features a memory foam comfort layer and a high-density polyfoam support core. The cover is infused with copper yarns. The G12 Plush features a memory foam comfort system and a support core constructed from high-density polyfoam. The fabric cover is infused with copper yarns.

King Koil Mattress Review. The final four mattresses are included in the iMattress collection. The G10 Firm and G12 Plush are memory foam mattresses, and the XS 10 Hybrid Firm and XS 50 are hybrid mattresses.

The XS 10 Hybrid Firm is designed with a memory foam comfort layer and a pocketed coil support core. The fabric cover is infused with copper yarns. The XS 50 Hybrid Plush features a memory foam comfort layer, a pocketed coil support core, and a fabric cover infused with copper yarns.

King Koil offers variable warranty coverage depending on the selected mattress model. 25-year warranty. Designed with a memory foam comfort layer and a pocketed coil support core. Cool down effect.

Regulates the moisture of the sleeping surface by absorbing moisture and causing it to evaporate faster than other mattress covers. Superior high density foam encasement firm edge system. Coirtex rubberized natural fiber. High density foam encasement with Kingkoil extra edge support feature.

King Koil Mattress Review. The Montego Luxury Firm has a comfort layer with layers of memory foam, gel memory foam, and polyfoam.

The support core features pocketed coils encased in foam, and the cover is a silk and wool blend infused with gel foam. The Montego Luxury Plush is designed with a memory foam comfort layer and a pocketed coil support core encased in foam. The cover is made of a silk wool blend infused with gel foam.

The next two hybrid mattresses are sold as part of the World Extended Life collection. Excellent Edge High Resilience Foam Encasement. The pocketed coil support core is encased in foam, and the fabric cover is infused with gel foam.

The cover is made of a silk and wool blend infused with gel foam. Of all the mattresses I have tried, King Koil is still the King. My parents bought a King Koil bed, it still feels as firm as it did when it was bought. King Koil Mattress Review.

King Koil Mattress Review. These three hybrid mattresses are part of the World Luxury Intimate collection. The Vienna Plush has a comfort system with layers of Joma wool, gel memory foam, latex, and memory foam.

The pocketed coil support core is encased in foam. The Vienna Firm features a comfort system with Joma wool, gel memory foam, latex, and memory foam layers. It also has a pocketed coil support core encased in foam. The Vienna Euro Top has layers of Joma wool, gel memory foam, latex, memory foam, and microcoils.

King Koil Mattress Review. The next two hybrid mattresses are sold as part of the World Extended Life collection.

The Athens Firm has a comfort system with a layer of Talalay latex buffered with top and bottom layers of high-density polyfoam. The pocketed coil support core is encased in foam, and the fabric cover is infused with gel foam.

King Koil Mattress Review. The next two hybrid mattresses are sold as part of the World Extended Life collection.

The Athens Plush has a top layer of high-density polyfoam and a bottom layer of Talalay latex in the comfort system, and a pocketed coil support core encased in foam. The fabric cover is infused with high-density foam.

King Koil Mattress Review. The Kingsley Plush is designed with layers of memory foam and polyfoam in the comfort system. The support core features pocketed coils with a foam encasement, followed by a polyfoam base layer.

The cover is blended from silk and wool and infused with gel foam. The Kingsley Euro Top features a comfort layer made of memory foam with two insert layers of polyfoam. The support core has pocketed coils encased in foam, followed by a polyfoam base layer. The cover is blended from silk and wool and infused with gel foam.

King Koil Mattress Review. The Monaco Plush has a polyfoam comfort system. The support core features pocketed coils reinforced with gel memory foam in the center, as well as a polyfoam base layer.

The quilted cover is infused with gel foam. The Monaco Euro Top has a polyfoam comfort system with an additional ‘lumbar support' bottom layer. The pocketed coil support core is reinforced with gel memory foam in the center, and supported with a polyfoam base layer. The cover is quilted and infused with gel foam.