Kmart Mattress Toppers: Thickness, Comfort & Hip Pain Relief

Anyone who’s woken up with a sore hip or felt the heat build up under the sheets knows the struggle. A mattress topper can be a simple fix, and Kmart offers two affordable options — a High Loft topper for warmth and cushioning, and a Cooling Memory Foam topper designed for pressure relief. Here’s how they compare and what experts say about choosing the right one for better sleep.

Kmart mattress topper sizes available: Double and Queen · Key feature of High Loft topper: Antibacterial top cover · Cooling option: Cooling Memory Foam Mattress Topper (3-inch gel)

Four key specs, one takeaway: Kmart’s toppers target two different sleep needs — warmth and cushioning vs. cool pressure relief.

What type of mattress topper is best?

• Memory foam provides pressure relief and contouring (AARP, a nonprofit for older adults)
• Latex offers natural cooling and responsiveness (Sleep Foundation)
• Polyester fills (like Kmart’s High Loft) add softness but minimal support

For lower back and hip pain, the Mattress Nerd (sleep product review site) recommends a medium-firm memory foam topper that cradles pressure points without sinking too much. Kmart’s Cooling Memory Foam topper fits that profile: 3 inches of gel-infused foam that dissipates heat while shaping to the body. The High Loft topper, by contrast, uses fluffy polyester—better for someone who wants a plush top layer but doesn’t need targeted support.

What is the best mattress topper for lower back and hip pain?

According to AARP’s 2026 guide, the Nectar Cooling Gel Memory Foam topper stands out for firmer support and secure edges. For a budget pick, the Sleep Foundation suggests the Sleep On Latex topper for its durability and temperature neutrality. Kmart’s offering won’t match those in longevity testing, but it costs a fraction of the price.

What is the best mattress topper to buy?

The Consumer Reports (independent product testing organisation) tested more than a dozen toppers for its 2026 review and found that high-density memory foam generally delivers the best balance of support and comfort. Their top-rated picks cost $150–$300, while Kmart’s entire topper line sits well under $100.

What thickness should a mattress topper be?

CHOICE (Australian consumer advocacy group) explains that mattress toppers range from 2 cm to 10 cm thick. Thinner toppers (2–5 cm) are best for softening a firm mattress without changing the feel drastically; thicker ones (6–10 cm) add substantial cushioning and can even change the mattress’s firmness level.

• Kmart High Loft topper: approximately 2 inches (5 cm) – light cushioning, retains most of the original mattress feel
• Kmart Cooling Memory Foam topper: 3 inches (7.6 cm) – medium cushioning, noticeable sink and pressure relief

According to the Sleep Foundation, a 2- to 3-inch topper is the sweet spot for most people: enough to improve comfort without making the bed feel unstable. Kmart’s lineup fits squarely in that range.

Can a mattress topper help with hip pain?

CHOICE notes that some people with sore joints find mattress toppers can alleviate pain, but major scientific studies have not confirmed a consistent effect. The mechanism is intuitive: a topper redistributes weight away from bony prominences like the hips.

Could my mattress be affecting my hip and causing pain in my hip?

Yes — a mattress that’s too firm or too soft can misalign the spine and compress the hip joint. The Mattress Nerd explains that a medium-firm topper with adequate contouring can reduce nocturnal hip discomfort by easing pressure on the greater trochanter. Kmart’s Cooling Memory Foam topper is designed for pressure relief, making it a candidate for this use case.

Can mattresses cause hip pain?

Absolutely. According to AARP, an unsupportive mattress can exacerbate hip arthritis and bursitis. Choosing the right topper — one that aligns the hips with the shoulders — can reduce morning stiffness.

Do mattress toppers make a bed more comfortable?

Yes — a topper adds cushioning, reduces pressure, and can slow the wear on a mattress. CHOICE says toppers may prolong mattress life by filling sagging springs and reducing friction. The Consumer Reports 2026 test found that a quality topper can improve overall comfort by a full point on a 10‑point scale.

Does a mattress topper really work?

For most users, yes. A YouTube review (bedroom product channel) described how a 3-inch gel memory foam topper transformed their sleep temperature and pressure points. Kmart’s version reportedly works similarly based on TikTok Shop (marketplace listing) feedback — though those reviews are not independently verified.

Are mattress toppers worth it?

Given that the average mattress lasts 7–10 years, a $50–$80 topper like Kmart’s can be a smart interim investment. The Sleep Foundation recommends replacing a topper every 3–5 years, which aligns with the expected lifespan of a budget model.

How do I know what mattress topper to buy?

Start with three questions: what firmness do you want, do you sleep hot, and what thickness fits your bed. CHOICE recommends checking your current mattress condition — if it’s less than 5 years old, a thin topper (2–3 cm) may be enough. Older mattresses benefit from thicker models (5–10 cm).

What are the disadvantages of mattress toppers?

• Can trap heat, especially with memory foam (CHOICE)
• Adds height that may require deep-pocket sheets
• Requires regular cleaning — toppers are not washable like pads
• May off‑gas initially (new foam smell)

Also read: Best Hair Dryer Kmart: Anko Reviews and Buying Guide and Calvin Klein Australia: Stores, Sales, Online & Stockists for more Australian retail guides.

Two Kmart toppers, one clear pattern: each serves a distinct sleep profile. The table below strips away marketing and focuses on measurable differences.

Six specs, one verdict: the Cooling Memory Foam topper outperforms the High Loft on pressure relief but costs slightly more — still under $100 in most Kmart stores.

Calling all hot sleepers… Upgrade your nights with our 3-Inch Gel Memory Foam Mattress Topper!

Kmart Australia (Facebook post)

Experience complete comfort and warmth with our High Loft Mattress Topper that has an antibacterial top cover.

Kmart product description, cited by Muscle Mat

Mattress toppers can make a mattress feel softer or firmer depending on the material and construction.

CHOICE, Australia’s leading consumer advocacy group

A medium-firm topper with adequate contouring can reduce nocturnal hip discomfort by easing pressure on the greater trochanter.

Mattress Nerd, sleep product review site

Kmart’s mattress toppers fill a real gap for budget shoppers who want to fix a too-firm or too-hot bed without spending hundreds. The catch: they’re not built to last more than a couple of years, and the lack of independent long-term testing means you’re betting on a short-term comfort fix. For Australian shoppers looking to ease hip pain or reduce night sweats, the Cooling Memory Foam model is the smarter of the two — but if your mattress is older than eight years, replacing the whole bed may be the cheaper path in the long run.

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