The IceRays field guide
Do cooling sleeves work? An honest answer
Short answer: cooling sleeves can feel cooler, mostly because of how damp fabric behaves in a breeze. They are not air conditioning for your arms. This page explains what is really going on, what we can and cannot promise, and how to judge it for yourself on your next warm day.
What "cooling" means on a sleeve
When people say a sleeve is cooling, they usually mean one thing: it feels cooler on the arm than they expected. That feeling comes from two everyday effects.
- Moisture leaving the fabric. Sweat soaks into the thin fabric and spreads out. When a breeze or your own movement dries it, you feel a chill. It is the same feeling as stepping out of the pool on a windy day.
- Keeping direct sun off your skin. A light layer stops the sun beating straight onto your forearm. On a hot afternoon, that alone can feel more comfortable than bare skin.
That is the honest version. It is a comfort feeling, and it depends on the day. Humid, still air dries fabric slowly, so the chill is weaker. A dry, breezy day makes it stronger.
What we do not claim
You will see bold promises on cooling clothing. We would rather be straight with you.
- We do not claim the sleeve lowers your skin temperature by a set number of degrees.
- We do not claim it cools your skin by itself, without sweat or a breeze.
- We do not claim it protects you from heat stroke or makes a very hot day safe.
How cool a sleeve feels varies from person to person and day to day. If anyone gives you a fixed figure, ask how it was measured, on whom, and in what weather.
Cooling and sun protection are two different things
This is the part most people mix up. A sleeve feeling cool tells you nothing about how much UV it blocks. They are separate questions.
For sun protection, the number to look for is UPF. UPF is a rating for fabric: UPF 50+ means the fabric blocks 98% or more of the sun's UV. Cancer Council lists UPF 50 and 50+ as "excellent protection". IceRays fabric was tested by ARPANSA in 2015 (black sample) and rated UPF 50+. You can read exactly what was tested (PDF, opens in a new tab), including its limits.
One more thing to know. UPF ratings describe dry fabric that is not stretched. Cancer Council says fabrics give less UV protection when wet. So if you dampen a sleeve to feel cooler, keep in mind that you may be trading a little sun protection for comfort. Our page on the wet test goes into this.
Sleeves versus a long-sleeved shirt
Cancer Council recommends clothing that covers as much skin as possible. A long-sleeved shirt with a collar is a great choice. So why do people choose sleeves?
- You keep your favourite shirt. Golfers, bowlers and gardeners often wear a short-sleeved shirt they like. Sleeves add arm cover without changing the outfit.
- Less fabric overall. A sleeve only covers the arm. Your body is not wrapped in an extra layer.
- On and off in seconds. Roll them down when the sun comes out from behind a cloud. Slip them off in the clubhouse.
Whether a sleeve feels cooler than a shirt for you is personal. The easiest way to find out is to try both on a warm day and see which one you reach for next time.
What one golfer told us
We only share real words from real customers. Tracy, a golfer, said this in her video about her IceRays:
"They're light, they're comfortable."
That is a fair summary of what a good sleeve should be. Light enough that you forget it is there, and comfortable enough to wear for a full round. You can watch Tracy's video on YouTube.
How to judge it for yourself
You do not need a lab. Try this on your next warm day out.
- Put the sleeves on at home, before you head out. Pull them up to just below the shoulder.
- Wear them for a proper session: nine holes, a game of bowls, or an hour in the garden.
- Notice how your arms feel once you start to sweat and there is a bit of breeze.
- Notice whether you think about the sleeves at all. If you forget they are on, that is a good sign.
And keep the rest of your routine going. Water, shade, breaks, a broad-brimmed hat and sunscreen on skin the sleeves do not cover. A sleeve is one helpful layer, not the whole plan.
Our old cooling video
Back in 2018, an IceRays video showed a handheld infrared thermometer pointed at a bare forearm and then at the outside of a sleeve. It is an archival demonstration, not a scientific test. It reads the surface of the fabric, not the skin underneath, and it was one setting on one day. We show it for interest only and do not quote its readings as a promise.
Where to next
- The wet test: what wetting a cooling sleeve really shows
- Golf in the heat over 60: a simple plan for hot rounds
- Gardening in the sun: how to cover up without overheating
- Sun sleeves for golf
- The 2015 test and what it covers (PDF, opens in a new tab)
Ready to try a pair? The IceRays 4-pack is AUD 120 for four pairs. That is $30 a pair, and you save $31.80 compared with buying four single pairs. One size fits all adults.
Related guides
- Choosing golf sun sleeves: six things to check
- Cycling sun sleeves: check coverage in the riding position
- Do Arm Sleeves Protect from Sun?
- Fishing sun sleeves: keep arm cover in your tackle routine
- Hiking sun sleeves: prepare for exposed parts of the trail
- Sun protection for golfers: why your arms burn even with sunscreen on
- Sun sleeves for cricket: arm cover for a long day in the field
- Sun sleeves for tennis: cover for every set on an open court
- Sun sleeves for walking and everyday outdoor time
- UV arm sleeves: the complete guide
- UV vs thorn protection, honestly
Common questions
Do cooling sleeves actually keep you cool?
They can feel cooler, mainly as sweat dries from the fabric in a breeze, and because the sun is not beating straight onto your skin. It is a comfort feeling that varies with the weather. We do not promise a set temperature drop.
Does a cooler-feeling sleeve block more UV?
No. Comfort and UV protection are separate. For UV, look for a UPF rating. IceRays fabric was tested by ARPANSA in 2015 (black sample) and rated UPF 50+, which blocks 98% or more of UV.
Should I wet my sleeves to make them cooler?
Some people do, for the chill as the water dries. Just know that Cancer Council says fabric gives less UV protection when wet. If you are out in strong sun for a long time, dry sleeves are the safer choice for sun cover.
Will sleeves make me hotter than bare arms?
It is a fair worry. It depends on you, the fabric and the day. Try them for one warm session and judge for yourself. If you prefer bare arms, put sunscreen on them instead.
Can sleeves stop heat stroke?
No. No clothing can promise that. Drink water, take breaks in the shade, and stop if you feel unwell. On very hot days, change your plans.