Hybrid vs Foam Mattress

A hybrid mattress combines a layer of foam with an underlying layer of individually pocketed springs, aiming to blend foam's contouring with the responsiveness and airflow of a coil structure. An all-foam mattress relies entirely on layers of foam for both comfort and support, with no coil layer beneath.

This comparison sets two hybrid mattresses — the Vesgantti 4ft6 Double Hybrid (£148.40, 26cm) and the Twirest Double Hybrid (£89.99, 22cm) — against two all-foam mattresses: the hiimgo Double Memory Foam (£109.98, 22cm) and the Uliyati CertiPUR-US Double (£114.99, 20cm). All four share a medium-firm to medium positioning, so the comparison is mainly about construction rather than firmness.

The Vesgantti is a 26cm hybrid combining breathable foam with individually pocketed springs, described as part of its Classic Box Top collection at medium-firm. The Twirest is a 22cm hybrid combining memory foam with a pocket-sprung base, also medium-firm, sold as a boxed 'mattress in a box' product.

The hiimgo mattress is a 22cm all-foam construction at medium-firm, marketed for body support and durability with an emphasis on breathability. The Uliyati is a 20cm all-foam construction, CertiPUR-US certified, at medium firmness and marketed for cool sleep and pressure relief.

Hybrid construction is intended to combine two behaviours: the foam layer on top contours to the body while the pocket-sprung layer beneath compresses independently to support different parts of the body separately. The Vesgantti's 26cm depth and box-top design point to a thicker, more layered feel, while the Twirest's 22cm depth is closer to the all-foam options here despite its spring base.

All-foam mattresses rely solely on the density and layering of the foam itself for both cushioning and support. The hiimgo and Uliyati listings both describe body support and pressure relief through foam alone, without a separate spring layer to add bounce or independent compression.

• Hybrid (Vesgantti, Twirest): foam comfort layer plus pocket-sprung support layer, generally more responsive and bouncier underfoot
• All-foam (hiimgo, Uliyati): support and cushioning from foam layering alone, generally a closer, more contouring feel
• Depth is not a reliable proxy for firmness across constructions — the thickest mattress here (Vesgantti, 26cm) and the thinnest (Uliyati, 20cm) are both marketed at medium to medium-firm

Both hybrid mattresses are marketed with breathability claims: the Vesgantti cites breathable foam, and the Twirest cites a breathable cover, in both cases alongside the pocket-sprung base that typically allows more airflow than a solid foam core.

Both all-foam mattresses also make breathability claims despite lacking a coil layer: the hiimgo mattress is marketed as breathable, and the Uliyati mattress is specifically described as designed for cool sleep. This suggests that, within this set of four, manufacturer breathability claims depend more on the specific foam and cover used than on whether a spring layer is present.

Prices across these four mattresses span a relatively narrow range: £89.99 to £148.40. The Twirest hybrid is the cheapest of the four despite being a hybrid construction, undercutting both all-foam options, while the Vesgantti hybrid is the most expensive, consistent with its greater depth and box-top design.

The hiimgo and Uliyati all-foam mattresses sit in the middle of the range at £109.98 and £114.99. On price alone, hybrid construction does not command a consistent premium in this set — the cheapest and most expensive mattresses compared here are both hybrids.

Choose a hybrid — the Vesgantti 4ft6 Double or Twirest Double — if you want a foam comfort layer combined with the airflow and responsiveness of pocket springs, particularly the Vesgantti if you want a deeper, box-top feel. Choose an all-foam mattress — the hiimgo Double or Uliyati Double — if you prefer close, even contouring and, in Uliyati's case, want a CertiPUR-US certified foam.

• Q: Is a hybrid always more expensive than an all-foam mattress? A: Not in this comparison — the cheapest mattress here (Twirest, £89.99) is a hybrid, while both all-foam options cost more.
• Q: Do all-foam mattresses always sleep hotter? A: Both all-foam options here carry breathability or cool-sleep claims, so a spring layer is not the only way manufacturers address heat retention.
• Q: Does a thicker mattress mean a firmer one? A: No — the deepest mattress here (Vesgantti, 26cm) and the shallowest (Uliyati, 20cm) are both marketed at medium to medium-firm, so depth and firmness are set independently.
• Q: Which is easier to move on, hybrid or foam? A: Hybrids generally feel more responsive because the pocket-sprung layer pushes back and compresses independently, while all-foam mattresses tend to feel closer and slower to spring back.

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