Their shirt should fight the heat. Not soak it up.
Every normal sports shirt just gets wet and holds the heat against your child's body. COOLZE does the opposite — it pulls heat off their skin the moment they start to sweat. Real science, built into the fabric. So the next time they're on court in a boiling hall, you're not stuck on the sideline wondering if they're okay.
30-day full refund. No conditions. Only 50 in this first batch.
You've seen it. You just didn't know what you were looking at.
Your child comes off court red in the face, soaked, breathing hard. You hand them water and tell them to rest. That's what everyone does — and everyone was taught the same thing.
But here's what nobody explains. In a packed, humid hall, once the air gets wet enough, sweat can't dry off the skin — so it stops cooling them. Their body just keeps getting hotter.
Above ~75% humidity, sweat can't cool the body — StatPearls / NCBIAnd the water bottle isn't the quick fix everyone thinks. In one controlled study, the water they drink only really started cooling them down after about 17 minutes — resting and sipping is slow. And in badminton, 17 minutes is basically a whole match: three games to 21 points often finishes in 15 to 20 minutes. By the time the water kicks in, the match is already decided.
Passive rest + fluids ~17 min slower to cool than active cooling — Caldwell et al., Frontiers 2026A normal shirt — even an expensive dri-fit one — does nothing to stop any of this. It soaks up the sweat and traps the heat right against the skin. That's the real enemy. Not their fitness. Not their effort. The heat. And almost nothing they wear on court actually fights it.
How COOLZE shirts actually work
You know the cold feeling when you chew gum? Same science — built into a shirt.
Chew a piece of minty gum and your mouth feels cold. That cold isn't the mint — it's the sweetener. When it touches the wet inside of your mouth, it soaks up heat and makes a real cooling feeling. That's a true cooling reaction, not a trick.
COOLZE uses that exact same food-safe cooling powder — the kind used in sugar-free gum — printed into the inside of the shirt. The second your child sweats, the sweat sets it off, and it pulls heat off their skin. A normal shirt just ends up completely soaked in sweat and heat, sitting hot against their back. COOLZE actually pulls the heat away.
What it is: A food-safe cooling powder printed inside the shirt.
What we measured: We took a heat scanner to a real badminton session right here in Kuantan. The COOLZE shirt read 6°C cooler than a normal shirt during play. To picture 6°C — that's the difference between stepping into an air-conditioned room and standing out in the car park.
And it gets stronger, not weaker: the more your child sweats, the harder it works. It doesn't fade halfway through the match.
The founding 50
Why we're making Batch 001 this good.
We could hold back, launch quiet, and make a lot of money from strangers. We'd rather do the opposite. We want 50 founding families who actually trust what we built — so we've packed everything into Batch 001 and made it almost impossible to say no to. You're the proof this works. We're treating you like it.
- ✓Cooling starts the second they sweat
- ✓Keeps working in humid halls where normal shirts quit
- ✓Light, hugging fit — never a heavy wet sheet
- ✓Helps hold reaction time & focus late in the match
- ✓Power doesn't fade as fast in the third game
- ✓Full stretch for every lunge and smash
- ✓Lowers heat strain on a child's body
- ✓Food-safe, skin-safe cooling
- ✓6°C cooler — measured, not claimed
Straight talk: COOLZE is for kids who play badminton in the heat — whether they train hard every week or just play regular games in a hot hall. If your child barely plays, a normal shirt is fine. But if they're on court in that heat often, this is built for them.
One COOLZE shirt. Try it before buying a pair.
- 1 COOLZE shirt
- Cools the second they sweat
- Founding 50 — ships first
- 30-day full refund
Two shirts + Heat Safety Guide + 3 free grips. The full founding-50 package.
- 2 COOLZE shirts — cools from first sweat
- Malaysian Heat Safety Guide (free)
- 3 premium grips (free)
- Founding 50 — ships first, price locked in
- 30-day full refund
Reserve your spot with a RM100 deposit. Pay the rest only when your shirt is ready to ship — and if you change your mind before then, the deposit is fully refundable.
Have your child train in it for 30 days — real session, real heat, because that's when the cooling switches on. If you're still not convinced it's helping them handle the heat, message us and we refund every ringgit. Keep the free Heat Safety Guide either way. No forms. No awkward back-and-forth. We take the risk — not you.
Yes, this is the part where every brand says "trust us." The difference is you can actually get your money back if we're wrong.
Everything you're actually getting.
Not just a shirt. Here's the full breakdown — every part of it, and what it does for your child.
- ✓Real cooling kicks in the second they sweat — no warm-up, no waiting
- ✓Keeps them cool instead of feeling like they're playing in an oven
- ✓A cooler body helps protect reaction time late in the match
- ✓Helps hold the sharp decisions and shot choices heat normally wrecks
- ✓Helps keep power and intensity from fading in the third game
- ✓Play feels lighter, so they hold their real pace instead of slowing down
- ✓Lowers heat strain — one less thing pushing toward heat exhaustion
- ✓You stop watching the sideline wondering if they're overheating
- ✓Keeps cooling in a packed, humid hall where normal shirts stop completely
- ✓Works in exactly the sticky conditions that are most dangerous for kids
- ✓Doesn't "die" mid-match the way a soaked normal shirt does
- ✓Gently hugs the skin so the cooling actually reaches their body — a loose shirt can't
- ✓Snug, but never tight or squeezing — it's not a compression shirt
- ✓Nothing flapping or catching as they lunge, jump and turn
- ✓Full stretch in every direction — every lunge, reach and smash unrestricted
- ✓Moves with them, never fights them
- ✓Holds its shape session after session
- ✓Light and airy — never the heavy wet-plastic drag of a soaked shirt
- ✓Less weight to carry means less wasted energy over a long session
- ✓Stays working through about 25 hard washes before it slowly starts to fade
- ✓Real, working cooling every session — not a shirt that just sits there doing nothing
- ✓Honest about its life, so you know exactly what you're paying for
- ✓Safe against a child's skin — the same food-safe stuff that's in sugar-free gum
- ✓Nothing sketchy or chemical-smelling sitting against your kid all session
- ✓Printed into the fabric, so it won't just rub off on day one
- ✓No rubbing or chafing when they're moving hard and sweating
- ✓Full shoulder movement for overhead shots — no seam digging in
- ✓Comfortable enough they forget they're wearing it
- ✓A real, tested number you can see on the scanner — not a marketing claim
- ✓Proof it does something before you spend a single ringgit
- ✓6°C is the gap between an aircon room and the open car park
- ✓Small batches mean we check quality far more tightly than a mass factory can — every shirt gets real attention
- ✓They're one of only 50 — a founding piece, not a shirt everyone has
- ✓Know exactly how to spot heat trouble early and what to do courtside
- ✓Could help you catch a dangerous situation before it gets serious
- ✓Yours to keep the moment you order — and keep even if you refund
- ✓All the risk is on us — try it in real heat, refund if it doesn't help
- ✓Only RM100 to reserve your spot, the rest paid when it ships
How to secure your order
Pay your RM100 deposit using either method below, then send us the payment screenshot on WhatsApp so we can confirm your size and reserve your spot in Batch 001.
Still deciding?
Got one of these questions? Tap it — we'll take you straight to the answer.
Every parent stops and thinks at least one of these before buying. That's normal. Pick the one on your mind:
The Malaysian Badminton Parent's Heat Safety Checklist
Before you spend a single ringgit with us — get the checklist we built for parents training kids in 40°C indoor halls. Recognise heat exhaustion early, know what to do courtside, and understand exactly why standard gear isn't enough. Sent instantly on WhatsApp.
"Is this even real? Does it actually work?"
Don't take our word for it. Watch it, and see the proof yourself.
You should be sceptical — a cooling shirt sounds like a gimmick. So here's the actual evidence it works. No hype, just what we can show you.
The scan: we took a heat gun to a real badminton session and scanned the fabric during play. The COOLZE shirt read 6°C cooler than a normal shirt. That's a real, measured number — not a claim we made up.
Measured by the COOLZE team at a local Kuantan court, MalaysiaThe cooling comes from two food-safe cooling powders — xylitol and erythritol — the same kind used in sugar-free gum and mints. When sweat touches them, they dissolve, and dissolving pulls in heat (the same reason gum feels cold in your mouth). We print them into the inside of the shirt, so the cooling happens right against the skin. It's simple, known chemistry — not magic, not marketing.
Food-grade compounds · the same cooling reaction used in sugar-free gumHere's the part that makes it real for a Malaysian hall: COOLZE doesn't need sweat to dry to cool. It cools the moment sweat touches it. So in a hot, humid hall — where the air is too wet for sweat to dry and normal cooling stops — this keeps going.
On why sweat stops cooling in humidity: StatPearls / NCBI"Does my child really need this?"
You did everything right. Here's the part nobody explained.
You bought the good shoes. The proper racket. You make sure they drink water and take breaks. You did everything a good parent does. Nobody ever explained these three things — and they're the whole reason the heat still wins.
So — does your child need it? It depends how hard they play. Here's an honest breakdown.
- ✕Feels hot, sticky and uncomfortable — like playing in an oven
- ✕Gets sweaty, but recovers fine after
- ✕Heat is an annoyance, but rarely why they stop at this level
- ✕A normal shirt honestly does most of the job here
- ✓Actually comfortable — no more feeling like they're melting
- ✓Stays cool and fresh the whole session
- ✓A nice upgrade — honestly not a must-have at this level
- ✓Great as a gift, or a trial before they start training harder
- ✕Feels like they're training in an oven — hot, heavy, suffocating
- ✕Keeps needing to step outside for air to cool off
- ✕Shirt is soaked and clinging by the second set, every time
- ✕Feels sluggish and slow in the back half of training
- ✕Heat is one of the biggest things dragging their session down — they fight it instead of focusing on training
- ✓Cool and comfortable — no more feeling like they're cooking
- ✓No constant runs outside just to catch a breather
- ✓Cooling is already working before the second set even starts
- ✓Stays lighter and sharper deeper into the session
- ✓Heat stops being the thing holding the session back — more of their energy goes into actually training
- ✕Feels like they're playing in direct sun — hot, heavy, suffocating
- ✕As the body overheats, decisions and shot choices get worse — studies show decision-making drops in the heat
- ✕Reaction time and focus slow down late in the match, right when points matter most
- ✕Power fades in the third game — research shows peak output drops late in play in the heat
- ✕Everything feels harder, so they pace down without meaning to
- ✕Real heat-illness risk across back-to-back tournament matches
- ✕Heat is one of the biggest reasons close matches slip away — not lack of skill
- ✓Cool and comfortable instead of cooking — the whole match
- ✓A cooler body helps protect the sharp decisions and shot choices heat normally wrecks
- ✓Reaction speed and focus better held into the deciding points
- ✓Holds power and intensity deeper into the third game
- ✓Play feels lighter, so they keep their true pace instead of fading
- ✓Lower heat strain across several matches in one day
- ✓Gives their skill and training the chance to actually decide the match
Let's be honest about what you're using to cool down now
You've tried the towels, the fans, the dri-fit. Here's why none of it fixed the heat.
Cooling towels, wet cloths, a fan at the side, expensive dri-fit shirts, the water bottle. They all deal with the sweat, or cool them down slowly after. None of them fight the heat while your child is actually playing. And the moment the hall gets humid, most of them stop doing anything at all.
What it does for your game
For the player: this is your edge in the third set.
If you're the one who found COOLZE — this part's for you. Heat is why your legs go heavy, why your reactions slow, why you lose points late that you'd win fresh. Keep your body cooler and you hold your speed, your footwork, and your focus right when the match is decided. Show this page to whoever's buying your gear.
Add up a single year of playing badminton seriously. A racket, RM800. Coaching, around RM100 a month — that's RM1,200 a year on its own. Then shoes, restringing, grips, shuttles, the bag, drinks, electrolytes, court fees. For most families it's well over RM2,000 a year. Sometimes far more.
Every single ringgit of that goes toward helping them play better. And not one ringgit of it does anything about the one thing that can genuinely harm them in a hot hall — the heat, and everything it does to a child's body, their focus, and their game.
So you're already spending thousands. The real question isn't whether RM329 is a lot for a shirt.
It's this — and only you can answer it: what matters more to you? Your child's safety, their game not falling apart in the heat, and you finally being able to sit back and relax instead of wondering at home if they're overheating... or the number on a price tag?
"What if they don't feel anything?"
Here's exactly how it works — so they feel it the way it's meant to.
The cooling isn't like a block of ice or a cold spray. It's a real cool feeling that switches on when they sweat — because sweat is what sets off the reaction. So it works best exactly where it's meant to: on court, in the heat, once they're moving and sweating. Put it on dry and sit still, and there's nothing to react with yet.
Have them wear it for a real session — warm up, get moving, start to sweat — and that's when the cool hit comes in, and keeps going the more they sweat.
And if you've done that and you're still not convinced? That's exactly what the 30-day refund is for. Real session, real heat, 30 days — if it's not helping, message us and we refund you in full. The risk is on us.
Questions parents actually ask
No bullsh*t answers. Just the facts.
First batch — only 50
Your child trains hard enough. The shirt should help out too.
Get in the first 50 and give them something that actually fights the heat with them.
Pick your shirt ↓30-day full refund · Only 50 in this batch