How to use KOLDWR
KOLDWR Pro is a boxer brief with a sewn in front pocket that holds a frozen gel pack. Two packs come in the kit, so one is worn and one is held in reserve. Here is the whole routine.
Before you go
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Freeze both packs
At least 2 hours in a normal home freezer. Overnight is better. Freeze both, not one, so you always have a spare ready.
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Take both with you
Slide one pack into the front pocket of the brief. Wrap the second in a towel and put it in your bag. Wrapped, it stays cold long enough to be worth carrying.
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Wear it like normal underwear
The fit is snug on purpose, it keeps the pack in position instead of letting it slide. Wear the brief under your shorts or on its own, whatever you would normally do.
In the sauna
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Sit as you always do
A frozen pack holds a cooler temperature for 30 or more minutes depending on how hot the room runs. There is nothing to hold and nothing to adjust.
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Swap in the spare for a long session
When the first pack softens, step out, pull it from the pocket and drop in the second. Takes about ten seconds.
The pack always sits inside the fabric pocket, never directly against skin. That barrier is deliberate. If it ever feels uncomfortably cold rather than cool, take the pack out.
Afterwards
Rinse if needed, dry, and put them straight back in the freezer so they are ready for the next session.
Remove the pack first. Machine wash cold, hang dry. Do not tumble dry and do not iron.
Packs live in the freezer between sessions. They are reusable indefinitely as long as the seal is intact.
Common questions
How long does one pack actually last?
30 or more minutes of cooling in a typical 80 to 100°C session. Hotter room, shorter window. That is what the second pack is for.
Can I wear it in a cold plunge?
You can, but there is no point. KOLDWR is built for heat.
What is in the gel?
A BPA-free non toxic cooling gel, sealed in a puncture resistant pouch.
What if I only do short sessions?
Then one pack per session is plenty. Freeze both anyway, it costs nothing and means you are never waiting on the freezer.
Kit includes one KOLDWR Pro brief and two reusable gel packs.
Get the kitSomething not covered here? Read the full FAQ or email support@koldwr.com. We answer everything ourselves.