哪一款凝胶记忆棉床垫最舒适，能够缓解背部疼痛？

The Nectar Classic is a 12in all-foam mattress with a medium-firm feel, pressure-relieving memory foam, responsive support foam, and strong motion isolation. Its cooling-fiber cover and breathable design suit back sleepers, combination sleepers, couples, and people who want contouring support without excessive heat.

The Nectar Premier is a 13 in all-foam mattress with a 2 in pressure-relieving memory foam comfort layer, responsive support foam, and an 8 in high-density foundation. Its cooling fibers, breathable cover, contouring feel, and moderate motion isolation suit back and side sleepers, especially couples.

The Nectar Luxe is a 14 in all-foam mattress with a medium feel, 3 in of pressure-relieving memory foam, and 3 in of responsive support foam over an 8 in foundation. Its cooling-fiber cover and contouring comfort suit side and back sleepers who want pressure relief and a classic memory foam feel.

The Saatva Contour5 is a premium seven-layer all-foam mattress with a body-hugging 5 lb memory foam core, lumbar support, and strong motion isolation. Its Medium and Firm options suit side, back, combination, and stomach sleepers, while cooling gel, airflow channels, and phase-change technology help reduce heat buildup.

The Nectar Premier is a 13in all-foam memory foam mattress with a medium-firm feel designed to balance pressure relief with consistent support. It uses cooling fibers woven into the sleep surface and is described as having both firm support and cradling comfort. It suits people who want an all-foam mattress that sleeps cooler while still helping with back and pressure-point comfort.