The Lenmore Plush and Lenmore Firm are in the middle group of innerspring mattresses in the 2015 Perfect Sleeper Collection by Serta. The key feature of this group is the Custom Support® Flex 704 Innerspring. It also features Serta's TrueSense® 3.0 design, which uses "3-way motion isolation," ComfortLast® Construction, Total Edge® Foam Encasement, Comfort XD™ Foam, PillowSoft™ Foam, and Cool Twist® Gel Memory Foam.
The Flex 704 Innerspring is an advanced continuous coil design. In continous coils, each row of coils is formed from one strand of spring wire. In Serta's FreeFlex design, the coils are not linked along the top of the row. This leaves them free to respond individually to the weight of the sleeper. This provides pressure relief and reduces motion transfer. Since they are still tied together at the bottom, the Flex coils still have some of the stability and durability of continuous coils. They are also less costly to manufacture than pocket coils, making them an affordable alternative to the premium springs.
With perimeter rods on the innerspring, the Lenmore Plush and Lenmore Firm still have the natural edge support of continuous coils. This is bolstered with Serta's Total Edge foam encasement for the purpose of preventing edge sag and roll-offs.
The combination of foams in the comfort layers of the Serta Perfect Sleeper Lenmore Plush makes it more giving at the surface than the Lenmore Firm. Another model, Lenmore Super Pillow Top, has additional layers of foam in the extra section for more surface softness.
Cool Twist Gel Memory Foam is advertised as a key ingredient in the Lenmore models. The infusion of Serta's liquid gel is intended to enhance support in the memory foam and to keep it cool. Cooling is also derived from open cell structure and ventilation of the memory foam.
The suggested foundations for the Lenmore models are two adjustable beds sold by Serta. The Pivot™ Head-Up is is regarded as an upgrade from flat box foundations. The head section can be tilted up. The Motion Essentials II is Serta's newest fully adjustable base. These models are also compatible with platform beds.
The warranty for these mattresses is 10 years non-prorated. Some retailers offer a 100-night sleep trial period.
Serta Perfect Sleeper Lenmore Plush and Lenmore Firm
Serta International, Customer Service Department, 3 Golf Center #392, Hoffman Estates, IL 60169, 1-888-55-SERTA (1-888-557-3782)
Innerspring (continuous coils)
704 flex top continous coils, gel memory foam, other foams, quilted cover
Quilted, fabric probably is polyester
Adjustable bed or platform
Flex coils for independent response
100 nights through some retailers
Keep in sanitary condition, and provide proper foundation