A king foam mattress with protector bundles a 183cm x 203cm king foam mattress with a matching waterproof protector. We stock king foam mattress and protector sets from $400 across our Sydney, Melbourne and Brisbane warehouses. If you want a king foam mattress and protector bundle under $600 with Afterpay, you'll find it below.
Quick Buyer's Checklist
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King size — Standard Australian king is 183cm x 203cm. Matches a king bed frame internal dimensions.
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Foam density — 30-35kg/m³ for medium use, 40kg/m³ for daily long-term use.
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Mattress thickness — 20cm for budget, 25-30cm for standard, 30cm+ for premium feel.
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Protector type — Waterproof for kids and pets, breathable cotton for adults, cooling tencel for hot sleepers.
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Bed frame fit — Slat spacing must be 7cm or less. Wider voids warranty.
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Warranty — 12-month warranty on manufacturing defects.
What size is a king mattress in Australia?
A king mattress in Australia is 183cm wide and 203cm long. King foam mattresses range from 20cm to 35cm thick depending on the model. King protectors fit mattresses up to 40cm deep.
| Size |
Width |
Length |
| Single |
92cm |
188cm |
| King Single |
107cm |
203cm |
| Double |
138cm |
188cm |
| Queen |
153cm |
203cm |
| King |
183cm |
203cm |
What types of king foam mattresses are available?
Standard king foam mattress
High-density polyurethane foam in a quilted cover. $400-$700 with protector. Lasts 6-8 years.
Memory foam king mattress
Memory foam top layer over support foam. Contours to body shape. $600-$1,200 with protector.
Pillow top king foam mattress
Soft top layer over firmer foam base. Plush feel. $700-$1,300 with protector.
Why include a mattress protector?
A mattress protector extends mattress life by 2-3 years. It blocks sweat, spills, allergens and skin cells from reaching the foam. Waterproof protectors are essential for kids' rooms and pet households. Most mattress warranties require a protector for warranty claims.
What Most Furniture Sites Won't Admit
Almost every king foam mattress sold online in Australia is imported from China, Vietnam or Malaysia — including ours. We import in bulk, hold stock in our Australian warehouses, and ship from there.
Second truth: most foam mattresses need 24-72 hours after unboxing to fully expand and off-gas. Sleeping early may permanently dent the foam and void the warranty. We list expansion time on every product page.
King Foam Mattress FAQ
Will a king mattress fit a king bed frame?
Yes, if both are standard Australian king size (183cm x 203cm). Check the internal dimensions on the product page.
How do I clean the mattress protector?
Most waterproof protectors machine-wash at 30-40 degrees. Tumble dry low or air dry. Wash every 2-4 weeks.
Can I pay with Afterpay or Zip?
Yes. A $500 king foam mattress and protector bundle works out to four payments of $125 with Afterpay, or about $43 per month with Zip. We also accept Klarna and PayPal Pay in 4.
How long does delivery take?
Sydney, Melbourne and Brisbane: 3-5 business days. Perth and Adelaide: 5-8 days. Regional areas: 7-14 days.
Complete Your Bedroom
Why us
Simple Deals — family-run since 2018. Australian warehouse stock. Support on 1300 456 786. Afterpay, Zip, Klarna and PayPal. 12-month warranty, 30-day change-of-mind returns. 4.66★ from 5,363 reviews.
