Nestin Duo Latex foam is a magical combination of 2 layers. High-Density PU foam(bottom layer). Natural Latex foam (top layer). Bottom Layer: HD PU(High-density polyurethane foam) High weight per cubic foot. It has a strong cell structure, which makes the material HIGH DURABLE and LONGLASTING. HD foams are SOFT as well as FIRM. Hard enough to give BODY SUPPORT and keep the mattress in its original shape. Top Layer: 100% Natural Latex. It is refined from MILK like SAP called HEVEA BRASILIENSIS. REDUCES BODY PAIN including BACK PAIN. It is a Resilient material. Support with excess PRESSURE on HIP and SHOULDERS. It is as SOFT as FEATHER. Provides an increase in VENTILATION. Mattress Feel: Soft and hard. Dual side usable. Mattress Material: HD PU foam (hard side) Pure natural latex (soft side) Mattress Cover: Dual-layer fabric cover, Inner protection fabric, and knitted breathable fabric. Packing: Compressed roll packing. Note: The mattress comes in the latest technology roll packing enabling you to easily carry it without anyone’s help. Once the package is opened the mattress regains its original size and shape in a few hours.