How to care for sun protective arm sleeves (washing, UPF longevity)
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The most common question we get after someone buys their first pair: "will washing them ruin the sun protection?"
No. And the reason why is worth understanding, because it is the single biggest difference between fabric that protects you for years and fabric that quietly stops protecting you after a season.
Why IceRays do not lose their UPF in the wash
There are two ways a garment can earn a UPF rating.
The first is a chemical treatment - a UV-absorbing finish applied to the surface of an ordinary fabric. It works, and it tests well when new. But it is a coating, and coatings wash out. Every cycle takes a little more of it, and nothing on the garment tells you when it has gone. You keep wearing it, and it keeps looking identical, while the protection quietly declines.
The second is the weave itself - protection built into the physical structure of the fabric, from the density of the fibres and how tightly they are constructed. There is no coating to lose, so there is nothing for the washing machine to strip away.
IceRays are the second kind. The fabric is 85% Tactel and 15% Spandex, and the ARPANSA-certified UPF 50+ rating comes from the weave. Wash them as often as you like - the protection is structural. (If you want the detail on what UPF measures and how it differs from the SPF on a sunscreen bottle, see UPF vs SPF explained.)
How to wash them
Simple, and forgiving:
- Machine wash cold or cool, on a normal or gentle cycle. They can go in with your regular wash.
- Use ordinary detergent. Nothing special required.
- Skip the fabric softener. This is the one that matters - see below.
- Air dry. They dry very fast, so there is rarely a reason to use a dryer.
- Avoid high heat - hot washes, hot dryers, and irons. Heat is what degrades elastane.
The one thing that actually damages them: fabric softener
If you take one thing away, take this.
Fabric softener works by depositing a thin waxy coating over the fibres. On a cotton towel that feels lovely. On a technical fabric it is a disaster, because that coating sits on top of the fibres and blocks their ability to wick moisture.
Wicking is the entire cooling mechanism. Tactel pulls sweat off your skin, spreads it over the surface, and lets it evaporate - dries about eight times faster than cotton - and that evaporation is what makes your arm feel cool. Coat the fibres in softener and the moisture can no longer move through them. The sleeve stops wicking, stops cooling, and starts feeling clammy.
The sun protection is unaffected - the weave is still the weave. But the cooling, which is probably why you bought them, is gone. That cooling is what makes them wearable through a five-hour round or an afternoon in the garden, so it is worth protecting.
The good news: if you have already done it, it is usually recoverable. Wash them two or three times in warm water with a normal detergent and no softener, and the coating generally breaks down and the wicking returns.
What about heat? (The real enemy of stretch)
The Spandex is what gives the sleeve four-way stretch, so it conforms to your arm, stays put, and recovers its shape instead of going baggy at the elbow.
Elastane fibres do not like heat. A hot wash, a hot tumble dryer, or an iron will, over time, break them down - and once the stretch goes, the sleeve stops gripping and starts sliding down your arm.
This is not a fragile fabric; it is just a fabric with one clear weakness. Keep it away from high heat and it will hold its shape for years. Cool wash, air dry, no iron.
Do they need washing after every wear?
If you have sweated in them, wash them - not for the fabric's sake, but for yours. Technical fabrics can hold onto odour if you leave them damp and bundled up, because that is an ideal environment for bacteria.
The practical habit: do not leave them screwed up in a golf bag or a garden bucket overnight. Pull them out, let them dry - which takes very little time - and wash them when convenient. Because they dry so fast, plenty of people rinse them, hang them, and have them ready to go again the same afternoon.
Storage and lifespan
Store them dry and flat, or folded. Do not leave them stretched over a hanger for months, and do not leave them baking on a dashboard - heat again.
Realistically, what ends a sleeve's life is mechanical: a snag on a thorn, a tear, or the elastane finally giving up after a lot of heat exposure. What does not end its life is the sun protection wearing out. That is the whole point of protection built into a weave rather than sprayed onto a surface - and it is why a tested sleeve beats an untested one.
Quick reference
- Do: cold or cool machine wash, normal detergent, air dry
- Do not: use fabric softener, tumble dry hot, iron, or bleach
- UPF after washing: unchanged - it is in the weave, not a coating
- Cooling after fabric softener: impaired, but usually recoverable with a few softener-free washes
The takeaway
Look after the stretch and avoid fabric softener, and a pair of IceRays will keep doing both of their jobs - certified UPF 50+ protection and moisture-activated cooling - for a very long time. The protection does not wear out, wash out, or need topping up. That is the advantage of fabric over sunscreen, and it is worth not undermining it in the laundry.
Need another pair, or a different colour? See the full range of UPF 50+ cooling arm sleeves - the per-pair price drops as you add more.