Hypnos Denhome Luxury Comfort Mattress

Meets BS7177: 2008 for domestic low hazard use. Testing covers resistance to a smouldering cigarette and a small flame the size of a match flame, not suitability for hotels or care homes.

A 30cm (about 11.8 inches) profile raises the sleeping surface by that amount above the base, so allow for it when judging how high the bed sits and whether your sheets will fit.

Medium marks the centre of the firmness scale. Use this brand's range when comparing options, since manufacturers set their own ratings and share no universal firmness standard.

Fabric pockets surround individual springs, allowing each to move under pressure without pulling directly on its neighbours. These form the support system, per the listing.

Extra support around the mattress perimeter is meant to stop the sides compressing as much when you sit on the edge or lie close to it; try the edge in person if you can.

UK handcrafting is the maker's own claim, while National Bed Federation approval is a membership scheme auditing fire safety, clean fillings and honest labelling.

Handles offer a grip for repositioning. Follow the handling instructions, as these turning handles are not necessarily designed to carry the item's full weight.

National Bed Federation approval means the maker belongs to a scheme audited on fire safety, clean fillings and honest labelling, not comfort or firmness.

Each spring has its own fabric wrapping and compresses independently, a construction billed as reducing movement compared with springs wired together.

Tufting secures the filling layers with ties passing through the mattress, limiting their movement and creating the small dips visible on the surface.

Guarantee cover lasts 10 years. Check the retailer's terms before buying to confirm which faults qualify for cover under the manufacturer's guarantee.

Damask fabric has a woven pattern, traditionally covering sprung mattresses and divan bases, with a finish the brand calls crisper than stretch knit.

Double-sided construction means you can flip it as well as rotate it to spread the wear, which is the useful part. Luxury is the maker's own label.

Double-sided construction provides two usable sleeping surfaces, allowing flipping to spread wear, though the sides may not feel identical.

Sold as fire resistant, not fireproof, with no test standard or testing conditions specified, so keep it away from flames and heat sources.

Wool is a natural fibre used in fillings or upholstery that can absorb and release moisture; its quantity and position remain unspecified.

UK handcrafting is the brand's own description, and the share done by hand differs between makers, so weigh the materials alongside it.

There are 1200 individually pocketed springs, usually counted in a king size, with fillings and spring gauge also influencing support.

Wool and cotton provide natural filling fibres, which the brand says allow air and moisture through for people sleeping warm.

Vent openings let air move into and out of the mattress or bed structure, allowing moisture within enclosed spaces to escape.

At 30cm (about 11.8 inches), mattress thickness affects sheet fit and bed height. For frames, check the complete dimensions.

Damask is a woven cover fabric with a pattern created by the weave, but the name does not specify its fibre content.

The retailer lists it as medium, placing it between soft and firm on a scale whose labels vary across brands.

Reinforced edges are said to help the sides retain their shape when sat on and make more of the width usable.

Cotton is a natural fibre used in fillings or fabrics that absorbs moisture and lets air pass through.

Side panel air vents let air move into and out of the fillings.

Ten years of guarantee cover come from the maker.