Harrison Spinks Jade 10000 Pocket Mattress (Firmer Feel)

Assessed from the product page published by Mattress Online, captured September 2026, and from regular price comparison across our UK retail partners.

A firm pocket spring mattress tends to suit back and front sleepers, and heavier sleepers who find softer mattresses let them sink too far. Pocket springs move independently, which means less of your partner's tossing and turning reaches your side of the bed than with an open coil design. Harrison Spinks is a long-established British maker, and the starting price reflects that positioning rather than budget territory. If you know you want a properly firm feel and are prepared to pay for pocket spring construction, this is the sort of mattress to shortlist. Do check carefully at checkout that you are ordering the Firmer Feel version, as the Jade 10000 comes in several firmness options.

Back sleepers
A firm pocket spring feel gives a flat, supportive surface, which suits anyone who lies on their back and wants to stay level rather than sink in.

Front sleepers
The firm feel keeps your body from dipping into the mattress, which means front sleepers are less likely to feel pushed out of a level position.

Heavier sleepers
Firm pocket springs resist sinking, which helps heavier sleepers who find softer mattresses let them drop too far into the bed.

Couples
Pocket springs move independently, which means less of your partner's tossing and turning reaches your side than with an open coil design.

Lightweight side sleepers will probably find a firm mattress a little too unyielding at the shoulder and hip, which can mean pressure points rather than support. It is also a stretch for tighter budgets. If you prefer a cradling, sink-in feel, look at the softer variants of this model instead.

How firm is the Harrison Spinks Jade 10000 Firmer Feel?

This version is rated firm, which means a supportive, on-top-of-the-mattress feel with limited sink. The Jade 10000 is sold in more than one firmness option, so confirm you are buying the Firmer Feel variant if that is the feel you want.

What sizes does the Harrison Spinks Jade 10000 come in?

It is available in five UK sizes: Single, Small Double, Double, King and Super King.

Does the Harrison Spinks Jade 10000 come with a guarantee?

The retailer listing for this mattress states a 5 year guarantee. As that term comes from the retailer's page rather than the manufacturer directly, it is sensible to confirm the guarantee details with the retailer before you order.

Is the Harrison Spinks Jade 10000 a pocket spring mattress?

Yes, it is a pocket spring mattress. Pocket springs move independently of one another, which means the mattress responds to your body shape and transfers less movement across the bed, a genuine help if you share with a restless partner.