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FAT Sleep Medium Firm 20cm Mattress | Tight Top Bonnell Spring | 2.3mm Wire | 4 Sizes

FAT Sleep Medium Firm 20cm Mattress | Tight Top Bonnell Spring | 2.3mm Wire | 4 Sizes

Regular price £119.00 GBP
Regular price £159.00 GBP Sale price £119.00 GBP
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The FAT Medium Firm Bonnell Spring mattress is a versatile everyday mattress designed for comfort and durability. Built with a premium 2 Sealed Border design, 16cm robust spring system, and a breathable knitted surface, it delivers reliable support while maintaining a neat, tailored look that lasts.

If the firm option feels too hard, this Medium Firm variant offers the ideal “Goldilocks” balance. It provides the dependable support of traditional springs with a slightly softer, more forgiving tight top layer, ensuring comfortable, restorative sleep night after night.

Product features

  • MEDIUM FIRM SWEET SPOT:
    The ideal balance of comfort and resistance. Perfect for side sleepers who need pressure relief or back sleepers who want support without the "rock hard" feeling.
  • TAILORED TIGHT TOP: Engineered with a 2 Sealed Border Tight Top design. This construction ensures the fillings stay securely in place and provides a clean, modern aesthetic with improved edge definition.
  • ROBUST CORE: Despite the lower profile, we use a heavy-duty 16cm Bonnell Spring unit with thick 2.3mm wire, ensuring this mattress doesn't sag and provides consistent support.
  • SOFT-TOUCH FINISH: Wrapped in a high-quality knitted fabric that promotes airflow and regulates temperature while you sleep.

Technical Specs & Details:

  • Total Depth: Approx. 20 cm (8 inches)
  • Style: Tight Top (2 Sealed Borders)
  • Firmness Rating: Medium Firm (Universal Comfort)
  • Springs: 13.5 Gauge / 2.3mm Wire
  • Delivery: Vacuum packed and rolled for easy stair access.

Perfect For:

  • Side and Back sleepers.
  • Bunk beds (due to the 20cm profile).
  • Teenagers and growing children.

Materials and care

Inside Your Mattress (8-Layer Construction):
Precision engineering for a better night's sleep. Here is the exact breakdown of your 20cm mattress:

  1. Soft-Touch Cover: Breathable Knitted Fabric.
  2. Surface Comfort: Quilted with 2cm Foam for immediate softness.
  3. Protective Layer: Non-Woven Fabric to secure the quilting.
  4. Comfort Layer: Filled with 2cm Support Foam for pressure relief.
  5. Spring Insulation: Cotton Pad (protects foam from the metal unit).
  6. The Core: 16cm Bonnell Spring Unit (Strong 2.3mm wire gauge).
  7. Base Insulation: Cotton Pad (protects base from springs).
  8. Base Finish: Durable Polyester Fabric on the underside.


Arrives rolled in a compact box. Simply unbox, unroll, and allow 24–72 hours for the mattress to fully expand to its intended shape and comfort level.

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Variant Variant total Quantity Price Variant total
Single
Single
Regular price
£159.00
Sale price
£119.00/ea
£0.00
Regular price
£159.00
Sale price
£119.00/ea
£0.00
Small Double
Small Double
Regular price
£222.00
Sale price
£159.00/ea
£0.00
Regular price
£222.00
Sale price
£159.00/ea
£0.00
Double
Double
Regular price
£222.00
Sale price
£159.00/ea
£0.00
Regular price
£222.00
Sale price
£159.00/ea
£0.00
King
King
Regular price
£278.00
Sale price
£199.00/ea
£0.00
Regular price
£278.00
Sale price
£199.00/ea
£0.00

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