Description Introducing this black mid size hybrid mattress, it features a breathable and hypoallergenic design. The luxurious breathable top is made of high-quality knitted fabric to help you stay cool all night. The unique 7-zone design of the mattress provides stress relief and support. In order to make it better, we have used independent bagged springs with 6 coils, which have a longer lifespan due to their shape and structure. We are committed to making first-class mattresses with the best materials to provide the ultimate sleep experience. Mattress in a box : the mattress is shipped in a box conveniently to your door for easy setup. Recovery of 72 hours is recommended for your new mattress to get to its original shape and firmness. Features Unique 7-zone design provides both pressure-relief and support The lower inner pocket-spring layer offers lasting support Anti-dust mites, Hypoallergenic material High rebound density sponge, soft and comfortable Contours to your body's natural shape Durable and not easily deformed Specification Firmness: Medium Firm Colour: Black Thickness : 12 in/14 in Overall dimension/Weight: Twin: 75 x 39 x 12 Inch / 48.5 lb Full: 75 x 54 x 12 Inch / 67.24 lb Queen: 80 x 60 x 12 Inch / 75.62 lb King: 80 x 76 x 12 Inch / 94.80 lb Twin: 75 x 39 x 14 Inch / 54.67 lb Full: 75 x 54 x 14 Inch / 75.60 lb Queen: 80 x 60 x 14 Inch / 88.18 lb King: 80 x 76 x 14 Inch / 110.23 lb Package Content Mattress x 1 【Customer Service】 Please feel free to contact us if you have any problem, we will help you resolve any issues in the shopping process.