"Still so cold," even in three layers?
The CoreWrap heats your core, where your body actually reads temperature. Warm core, warmer everything. You stop dressing like you're camping in your own living room.
The Wearable Hot Water Bottle
Cramps Hit Front and Back. Your Hot Water Bottle Only Covers One.
Meet the CoreWrap: 80cm of natural-rubber warmth that ties at your waist and covers your abdomen AND lower back at the same time. Hands free for hours, anywhere in the house, for about five cents of hot water.
Ties on · stays putUp to 6 hours of warmth
Sound Familiar?
You're not imagining it. Australian winters are an indoor sport.
You know the drill. Beanie inside the house. Sleeping bag socks. The good blanket that lives on the couch from June to August. And the heater you turn off after twenty minutes because you can hear the meter spinning.
One renter put it perfectly:
We think 19 degrees feels like minus 20.
Another swore she'd tried everything:
I've put bubble wrap on the windows, but it's still so cold.
And if you get cramps on top of a cold house? That's the special level. The hot water bottle slides off your lap every time you reach for the keyboard. The heat pad needs a wall socket. The painkillers barely touch it some months. So you sit very still, holding warmth against one spot, while the ache wraps around to your back anyway.
It's not you. It's not even your "glorified tent" of a rental. It's that nobody ever fixed the shape of the thing keeping you warm.
The Single-Point Heat Mistake
It's like having two alarms going off and only switching one off.
Here's what nobody told you about cramps: the pain isn't only in your abdomen. Your uterus and your lower back share the same nerve pathways, so when one fires, the other fires with it. Doctors call it referred pain. You know it as that deep ache that wraps from your front to your spine on day one of your cycle. It's like having two alarms going off and only switching one off. That's why the hot water bottle you keep repositioning never quite gets you there, and why you end up back at the painkiller drawer.
Heat itself isn't the problem. Published clinical research found that continuous low-level heat matched a common over-the-counter painkiller for period cramps, and started working faster. The problem is COVERAGE. A standard bottle warms one spot. Heat patches die in 30 minutes. Electric pads tie you to a wall socket. None of them close the loop.
The CoreWrap's Dual-Zone Heat Loop is 80cm of natural-rubber warmth that ties at your waist and covers your abdomen AND lower back at the same time. Both alarms, switched off at once. Hands free, for hours, anywhere in the house. No charging, no batteries, no $200 gadget. Just hot water and the right shape.
Fill
Fill with one kettle of hot (never boiling) water, using the funnel and fill-line.
Tie
Tie it at your waist, front to back, over or under your jumper.
Go
Type, cook, clean, exist. Up to 4-6 hours of warmth that moves with you.
What Changes
Heat the Person, Not the House.
Tired of repositioning the bottle every five minutes?
It ties on and stays put, front to back. Your hands go back to your keyboard, your coffee, your life. The warmth stays exactly where the ache lives.
"I always expect a big one around winter."
Not from us. One kettle of hot water costs about five cents. The portable heater costs about $2.80 a day to run. Wear your warmth and leave the meter alone.
Done with patches that die in 30 minutes and pads that chain you to the wall?
Natural rubber holds warmth for up to 4-6 hours. No cords, no charging, nothing to break in three years.
Real Warmth, Real People
Proof you can check before you buy
I bought this for the first day of my cycle because my regular hot water bottle kept sliding off my lap while I was working. The CoreWrap actually stays tied around my waist, so I can sit at my desk, make coffee, move around the house, and still have heat on my front and lower back at the same time. Honestly, it’s the first thing that made heat feel practical instead of annoying.
My rental gets freezing in winter, but I hate turning the heater on because the bills are ridiculous. This lets me warm myself instead of trying to heat the whole room. I’ve been wearing it on the couch and at my desk, and it makes such a difference. Simple idea, but the shape is what makes it work.
I already had an electric blanket and heat patches, but they never worked for daytime. The blanket keeps me stuck in bed, and the patches cool down too fast. The CoreWrap is different because it moves with me. No cord, no charging, no constantly adjusting it. I didn’t realise how much better a long wearable bottle would be until I tried it.
Backed by published research
Published clinical research found that continuous low-level heat matched a common over-the-counter painkiller for period cramps, and started working faster. We didn't invent heat. We fixed its shape. Read the study.
The Burst-Free Promise
Try the CoreWrap for 90 days. If it doesn't make your winter warmer, send it back and we refund every cent. And if it ever bursts or leaks in your first 12 months, we replace it free.
Nothing to hide
Natural rubber, a marked fill-line, and a funnel that keeps the seal dry. Every part of the CoreWrap is built to be looked at up close.
Build Your Warm Winter
Everything you get with your CoreWrap
The CoreWrap (80cm bottle + knitted waist-tie cover + funnel + fill-line)
$59
Bonus: Warm Home Hacks, 17 renter-safe ways to cut your winter bill
$29
Bonus: The Cycle Comfort Protocol, printable quick-card
$19
Free tracked AU shipping
$9.95
Total value $116.95
Today $59
1× CoreWrap
$59
1 CoreWrap with knitted waist-tie cover, funnel and fill-line. Both bonuses included, plus free tracked AU shipping.
2× You + Yours
$99Normally $118
Save $19
One for you, one for whoever keeps stealing yours.
2 CoreWraps, each with knitted waist-tie cover, funnel and fill-line. Both bonuses included, plus free tracked AU shipping.
3× Winter Household
$139Normally $177
Save $38
The whole flat stops fighting over the heater.
3 CoreWraps, each with knitted waist-tie cover, funnel and fill-line. Both bonuses included, plus free tracked AU shipping.
Our Word, In Writing
The Burst-Free Promise.
Try the CoreWrap for 90 days. If it doesn't make your winter warmer, send it back and we refund every cent. And if it ever bursts or leaks in your first 12 months, we replace it free. No questions, no hoops, no fine print.
90 days, any reason
If it doesn't make your winter warmer, send it back and we refund every cent.
12 months burst-free replacement
If it ever bursts or leaks in your first 12 months, we replace it free.
Before You Buy
The questions everyone asks first
Aren't hot water bottles dangerous? I keep seeing burn stories on the news.
The ones in the news are the $11 ones. In the regulator's national testing blitz, more than half the brands tested failed the mandatory safety standard. That's exactly why the CoreWrap exists: it comes with a marked fill-line and funnel so you never overfill, and carries the only Burst-Free Promise in the category: 90 days money back, 12 months free replacement. Use hot, never boiling water, always with the cover on. We put the instructions on the bottle itself.
Why would I pay $59 when Kmart sells one for $11?
Three reasons. Coverage: the Kmart bottle warms one spot; the CoreWrap wraps your abdomen and lower back at once and leaves your hands free. Cost per winter: at 5 cents a fill, the CoreWrap pays for itself in three weeks of NOT running the heater ($2.80 a day adds up). And the $11 tier is the one filling the recall lists. You're not paying for rubber, you're paying for the shape, the safety testing, and the promise that backs both.
I already have an electric blanket. Why this?
Your electric blanket is great, at 10pm, in bed, near a socket. The CoreWrap works at 2pm at your desk, at 6pm at the stove, on the couch, on the train. It's the difference between warmth as a location and warmth that comes with you. (Also: nothing to charge, nothing to fray, nothing to forget to switch off.)
Is this just another Instagram gadget?
Fair question. The honest answer: the heat method itself is one of the most studied comfort tools there is. Published clinical research found continuous low-level heat matched a common painkiller for period cramps, with faster onset. We didn't invent heat. We fixed its shape, so it finally covers the full front-to-back ache instead of one spot. And if we're wrong about it for you, the 90-day promise means you don't pay for our confidence.
What if it leaks in my bed?
The stopper is pressure-tested against the mandatory Australian standard, the fill-line stops overfilling, and the funnel keeps the seal dry. And if it ever does fail: that's literally what the Burst-Free Promise is for. Replacement, free, first 12 months. No questions.
I have a latex allergy.
The bottle is natural rubber. If you have a latex allergy, this one isn't for you, and we'd rather tell you now than after checkout.
Warm from the first kettle, or your money back
You've spent enough winters negotiating with the thermostat. Tie the warmth on, keep your hands free, and let the heater have the month off.