Spine-Lab 5-Zone Bonnell Spring Mattress — King, 21cm, Medium-Firm, White

Sleep with confidence on the Spine-Lab Mattress, a thoughtfully engineered fusion of traditional Bonnell spring support and modern comfort layers. At 21cm deep with a medium-firm feel, this mattress delivers steady spinal alignment, targeted pressure relief, and a surface that adapts to your body for a restorative night’s rest.

Why a 5-Zone Bonnell Spring design matters

The 5-zone configuration divides support across key body regions—head/shoulders, mid-torso, hips, thighs, and legs—so you feel engineered precision where you need it most. This targeted zoning helps keep your spine in a neutral position, reducing fatigue and morning stiffness while still offering a resilient, durable base.

Comfort layers that matter

• Upper foam layers — a responsive, body-mapped surface that flexes with your movements for personalized comfort.
• Breathable memory foam — provides pressure relief without trapping heat, so you stay cooler through the night.
• Cool-touch quilted cover — a breathable, softly textured finish that helps dissipate heat for a fresher sleep surface.
• Lower Bonnell spring core — durable, long-lasting support that maintains shape and resilience over time.
• Hypoallergenic materials — designed with sensitive sleepers in mind, reducing irritation and promoting a healthier night's rest.

Size and dimensions — King and other available options

King: 183cm x 203cm x 21cm. Other sizes available to suit different rooms and setups:

• Single: 92cm x 187cm x 21cm
• Double: 137cm x 187cm x 21cm
• Queen: 153cm x 203cm x 21cm

Who is this mattress ideal for?

Ideal for sleepers who want reliable all-night support with a touch of contouring comfort. The medium-firm feel suits a wide range of sleeping styles, including back sleepers seeking spinal alignment and combination sleepers who switch positions through the night.

Practical benefits and real-world use

• Consistent support from a sturdy Bonnell spring core paired with high-density foam top layers—durable enough for long-term use in family bedrooms or guest rooms.
• Pressure relief in shoulders and hips without sacrificing overall support, helping to minimize tossing and turning.
• Cooler, more comfortable sleep surface thanks to breathable foams and a cool-touch quilted cover.
• Hypoallergenic materials reduce exposure to common irritants, supporting better sleep for sensitive individuals.

Delivery, setup, and care notes

This mattress is shipped compressed and rolled in a box for convenient delivery and setup. It will expand to its normal shape within approximately 1 day after unpacking. Please note: it cannot be shipped to a PO Box or Locked Bag address—provide a residential or business address at checkout to prevent delivery delays.

What’s included: 1 x Spine-Lab Mattress

Upgrade your sleep space with a mattress designed to support your spine, relieve pressure, and keep you cool all night long. The Spine-Lab 5-Zone Bonnell Spring Mattress brings together traditional durability and modern comfort for a night’s rest that truly feels engineered for you.