A 13.5 gauge bonnell spring mattress - the Deluxe Semi-Ortho Mattress provides you with unparalleled and complete support and comfort throughout the night, with a sturdy spring unit and luxurious fillings, finished with breathable coverings and borders to help you feel refreshed and rejuvenated in the mornings. Some of the features of the Deluxe Semi-Ortho mattress include:

• 13.5g Bonnell Spring Unit: The bonnell spring is the most traditional kind of spring unit for innerpsring mattresses. The coils have an hour glass shape and they are interconnected with a mesh of metal to make the spring system. It's been made from durable materials and gives a traditional, even support and feel. 
• 900gsm Spring Insulator: A mattress spring insulator helps bridge the gap between the spring layer and the softer upholstery "comfort" layers. It helps provide a consistent surface between the springs and the other fibres above it. 
• Polyester Fillings: The polyester fillings help to add firmness to the mattress, as well as provide sumptuous softness and comfort throughout the night
• Damask Cover & Quilted Border with Air Vents: The Damask coverings create a breathable, soft sleeping surface and when paired with the air vents on the side of the quilted border, this keeps your bed feeling fresher for longer.
• Red Edge Support: This provides edge-to-edge support for the mattress, which helps to prevent the edges of your mattress from sagging or sinking, keeping you feeling secure and supported throughout the night.

Mattress Tension: Medium/Firm

Mattress Depth: 23cm

Dimensions: 190cm D x 76cm W x 23cm H

Made in the UK