Novilla has been working on better bedding to help our customers sleep well and love well. This mattress has a hybrid design that provides a balance of comfort and support. It fits sleepers who prefer a medium-firm mattress. Why choose the Novilla Groove hybrid memory foam mattress? ·Minimal motion transfer, which means you're less likely to feel your partner's tossing and turning ·Ample support for hips and shoulders ·Provides above-average pressure relief, especially for people with lower back pain ·Designed for better temperature control and heat transfer What’s in the box? 1 x Novilla king size hybrid mattress 1 x Novilla manual 1x package opener Note: ·It is normal that a new hybrid foam mattress has a slight odor, which usually dissipates over the course of a few days, provided that the mattress is aired out in a well-ventilated space ·Mattress in a box. Please give it 48~72 hours to fully expand