FirmCore Classic Double Mattress

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FirmCore Classic Double Mattress

$319.00 $299.00 SAVE $20.00
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Peace of Mind Guarantee
Easy Returns
Warranty Included
Fast NZ-wide Delivery & Silverdale Pickup

Why HardCore Classic?

HR Pocket Spring Support
HR Pocket Spring Support
Independent springs provide firm, targeted support across the mattress.
Very Firm Comfort
Very Firm Comfort
The supportive feel suits sleepers who prefer firmer surfaces.
Breathable Foam Layers
Breathable Foam Layers
Breathable comfort foam adds cushioning above the spring core.
20cm Tight-Top Profile
20cm Tight-Top Profile
The tight-top build creates a clean, supportive sleep surface.
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SKU: 24376
Availability: In Stock Pre order Out of stock
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6 Ingot Place, Silverdale, Auckland. Open 7 Days from 9AM - 5PM

Product Description

The FirmCore Classic is built for sleepers who mean business. A pocket spring core paired with high-density foam delivers firm, dependable support-night after night, year after year.

What This Product Is Good For

  • Double bed mattress setups
  • Sleepers preferring a very firm feel
  • Everyday bedroom use
  • Guest and spare rooms

Why This Is a Smart Choice

  • Pocket spring system delivers firm, targeted support - ideal for back and stomach sleepers
  • High-density foam layer adds resilience - holds its shape after years of use
  • Soft-touch knitted cover is breathable and gentle on skin
  • Firm comfort level - recommended for those who prefer a solid, supportive feel
  • 8-layer construction engineered for long-lasting performance
  • Total height 20cm - check your bed frame clearance before ordering

Materials & Build

  • 300g knitted fabric cover
  • High density and breathable comfort foam layers
  • HR independent pocket spring system
  • Non-woven fabric protective layer

A practical double pocket spring mattress for shoppers who prefer a very firm sleep surface.

Key Features

Features
  • Double mattress measuring 138 × 188 cm
  • 20cm tight top mattress design
  • Very firm feel
  • HR independent pocket spring system
  • 300g knitted fabric cover
  • High density foam layer
  • Breathable comfort foam layer
  • Non-woven fabric protective layer

Specifications

Mattress SizeDouble
Product Dimensions138 × 188 × 20 cm
Mattress Thickness20 cm
FirmnessFirm
Product Weight29.0 kg
Material / Layers300g knitted fabric
High density foam
Breathable comfort foam
HR pocket springs
Non-woven fabric
ColourWhite

SKU 24376

Package Contents

Assembly RequiredNo
CartonCarton A: 28 × 28 × 146 cm (30.00kg)
Package Contents1 × FirmCore Double Mattress

Delivery Information

Shipping Costs

Shipping is available throughout New Zealand. Delivery costs are calculated at checkout based on your address, item size and weight, and delivery method.

Dispatch & Delivery

Most in-stock orders are dispatched within one business day after payment confirmation.

  • Standard courier delivery: approximately 1–3 working days
  • Rural delivery: please allow an additional 1–2 working days
  • Oversized or freight items: approximately 2–5 working days

Pre-order items will be dispatched once stock becomes available. The estimated dispatch timeframe is shown on the product page and in your order confirmation.

Tracking details will be emailed after dispatch. Orders containing multiple items may arrive in separate deliveries. Delivery timeframes are estimates and may vary.

View Full Shipping Information

Warranty & Returns

We take product quality seriously and stand behind every purchase.

10-Year Limited Warranty
Covers manufacturing defects under normal household use. Normal wear, comfort preference, normal body impressions, stains, moisture or mould damage and misuse are excluded.

30-Day Returns
Changed your mind? Eligible products can be returned within 30 days of delivery, subject to our Returns Policy.

For full details about coverage, eligibility, exclusions and making a claim, please refer to our Warranty Policy and Returns Policy.

Important: These warranty periods are in addition to, and do not limit, consumers’ rights under the New Zealand Consumer Guarantees Act 1993.

Frequently Asked Questions

Why choose treasurebox?

Modern Furniture at Fair Prices

Our promise? High-quality furniture at radically lower (and much fairer) prices than comparable retailers.

30-Day Satisfaction Guarantee

We're confident you'll love your new treasurebox furniture, but just to make sure, you have 30 days to try it out.

We're Here To Help

If questions arise, our friendly and knowledgeable Customer Care team is just a phone call, chat, or email away.