Flaxby Natural Hempstead Dual Season 5750 Pocket Sprung Mattress

Individually wrapped pocket springs each sit in their own fabric and compress on their own, responding to the weight directly above them. Less movement travels across the mattress than with springs wired together.

Made in the UK covers where the product is produced; 'British craftsmanship at its finest' is the brand's own praise, so judge quality from the materials and construction.

Billed as very firm, with minimal surface softness. Firmness labels vary between brands, so the rating alone cannot tell you how the surface will feel under your weight.

Both sides are suitable for sleeping on. Flip regularly to spread wear between the two surfaces, following the care instructions for how often to turn it.

Very firm on the brand's grading barely gives; it's aimed at heavier people and back or front sleepers, and lighter side sleepers find it too hard.

A seven-year manufacturer's guarantee is included. The retailer's terms explain what the cover pays out on, so check these before relying on it.

Micro springs are small springs that compress under pressure, and the listing says they respond to even tiny movements as you change position.

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

Promoted as handmade in the UK, the manufacturing claim leaves the amount of hand construction unspecified.

Sleepmotion compatibility means it can bend with the adjustable base as its head and foot sections rise.

Both sides can be slept on, so flipping and rotating shares wear between the two sleeping surfaces.