Napnest Firmly mattress 27cm firm feel heavy-gauge pocket spring, King Single to Super King, NZ Furniture Warehouse Penrose Auckland

Firm Mattress Replacement for Existing Bed Frame NZ

Napnest Firmly mattress cross-section showing 2.3mm heavy-gauge independent pocket spring system, air convoluted wave foam layer, high-density support foam and reinforced 360-degree structural foam edge support, 27cm height

Firmly Mattress - Firm Feel

Name: Firmly Mattress - Firm Feel
Brand: NZ Furniture Warehouse
SKU: NNEST015
Price: 339.0 NZD
Availability: InStock

Honest pricing, no inflated RRPs

North Island delivery, or $89 flat Click & Collect

18 months interest free available

See it in person at our Penrose showroom

$339

The Napnest Firmly Mattress is a 27cm firm feel mattress and the first in the Napnest range specifically engineered for sleepers who need maximum structural support. Built on a heavy-duty 2.3mm gauge independent pocket spring system — a meaningful step up from the standard pro pocket springs in the models below — the Firmly combines high-density support foam and air convoluted wave foam with reinforced 360-degree edge support for a sag-resistant, motion-isolating sleep surface right to the perimeter. Available in King Single through to Super King. Certified with OEKO-TEX fabrics and CertiPUR-US foams, backed by a 5-year warranty.

5 Reasons the Napnest Firmly Mattress is a Customer Favourite:

2.3mm Heavy-Gauge Pocket Springs — The Strongest Spring Core in the Napnest Range: The Firmly's 2.3mm thick gauge independent pocket springs are a step up from the standard pro pocket springs used in the Snoozy, Comfy, and Snugly. Heavier gauge coils mean greater longevity, stronger resistance to body impressions, and more targeted support at major pressure points — built for sleepers who need a spring system that holds its structure over years of daily use.
High-Density Support Foam That Resists Body Impressions Over Time: The foundational high-density foam layer is engineered to maintain its shape under sustained weight — resisting the gradual body impressions and sagging that reduce the lifespan of lower-density foam. For firm feel sleepers, this is the layer that keeps the mattress performing at year five the same way it did on day one.
Air Convoluted Wave Foam for Cooling and Pressure Relief: Despite its firm feel, the Firmly incorporates air convoluted wave foam to actively drive airflow through the upper comfort layers — preventing heat buildup and adding a degree of pressure relief without compromising the firm, supportive feel that defines the mattress.
Reinforced 360-Degree Edge Support That Maximises Every Centimetre: Structural foam perimeter edge support runs around the entire mattress border — eliminating border sag, expanding the usable sleep surface to the very edge, and making getting in and out of bed effortless. A consistent feature from the Snugly upward, and one that becomes even more important on a firm mattress where edge stability directly affects overall sleeping confidence.
Certified Toxin-Free and Backed by a 5-Year Warranty: OEKO-TEX certified fabrics and CertiPUR-US certified foams confirm the Firmly is completely free from harmful chemicals across every layer. Backed by a 5-year Napnest warranty. Visit our Penrose showroom to feel the firm feel profile in person before committing, or order online with North Island delivery and 18 months interest-free finance available.

Key Specifications

Product - Napnest Firmly Mattress
Comfort Feel - Firm
Mattress Type - Heavy-duty 2.3mm gauge independent pocket springs, air convoluted wave foam and high-density support foam
Mattress Height - 27cm
Edge Support - Reinforced 360-degree structural foam perimeter edge support
Cover Fabric - Premium high-durability breathable moisture-wicking cover fabric
Safety Certifications - OEKO-TEX certified fabrics, CertiPUR-US certified foams
Available Sizes - King Single, Double, Queen, King, Super King
What's Included - 1 x Napnest Firmly Mattress
Warranty - 5 Years
Showroom - View and test in person at 8 Penrose Road, Penrose, Auckland, open 7 days

Frequently Asked Questions

What sizes does the Napnest Firmly Mattress come in?

The Napnest Firmly is available in King Single, Double, Queen, King, and Super King. It has a 27cm height across all sizes.

What makes the Firmly different from other Napnest mattresses?

The Firmly is the first firm feel mattress in the Napnest range — every model below it is medium feel. It also introduces a heavier 2.3mm gauge pocket spring system, a step up from the standard pro pocket springs used in the Snoozy, Comfy, and Snugly, delivering greater longevity and stronger structural support for sleepers who need maximum alignment.

Is the Firmly suitable for back and stomach sleepers?

Yes — the firm feel profile and high-density foam foundation make the Firmly particularly well suited to back sleepers, stomach sleepers, and anyone who finds medium feel mattresses too soft for proper spinal alignment. It is also a strong choice for heavier sleepers who need a more resilient support structure.

Is the Napnest Firmly certified safe?

Yes — OEKO-TEX certified fabrics and CertiPUR-US certified foams throughout, confirming the mattress is free from harmful chemicals across every layer from cover to spring core.

Can I try the Firmly in person, and how is it delivered?

Yes — the Napnest Firmly is available to view and test at our Penrose showroom, 8 Penrose Road, Auckland, open 7 days. We strongly recommend trying a firm feel mattress in person before purchasing. We deliver across the North Island with 18 months interest-free finance available online and in-store.

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