Novilla Hybrid Mattress - A COZY HOME MADE SIMPLE! Your new Novilla mattress king size 12 inch has everything you need. What's in the Box? 1 x Novilla 12" king size hybrid mattress 1 x Novilla manual 1 x warranty card 1 x package opener Note? It can take more than 72 hours for this pillow top mattress to puff back up to its original shape as low temperature, humidity, air pressure and ventilation condition in your room may delay the expansion process.