RUNS WARM
You kick the covers off
Usually somewhere around 2am, then you're cold twenty minutes later. The comforter isn't the problem — the layer underneath it is.
VELTHEA™ SLEEP SET
VELTHEA™ SLEEP SET
Sold by
Temuvo
✓
★
(7.8K)
20.2K have been sold.
Warm enough for a cold room. Thin enough that 2am stays asleep.
Half a millimeter of four-way stretch knit — a long-sleeve top and leggings that hold a little warmth, move moisture away, and don't fight your comforter.
Ready to ship today
Lily, Maria, Anna
and 489 more bought this month
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Sleep in it 60 nights. Worn, washed — still a full refund.
VELTHEA™ SLEEP SET
Regular price
$29.90
Regular price
$29.90
Sale price
$59.90
Unit price
per
WHAT ACTUALLY HAPPENS
One night, hour by hour.
Your body temperature isn't flat overnight. It drops as you fall asleep, bottoms out around 4am, then climbs before you wake. Thick sleepwear holds a fixed amount of heat in — which means it's wrong for most of the night.
THE NUMBER THAT MATTERS
Half a millimeter.
Cross-section, drawn to scale. Flannel pajamas run about four times thicker; fleece about eight. That thickness is doing something all night whether you need it or not.
DRAWN TO SCALE · CROSS-SECTION
THE PART PEOPLE GET BACKWARDS
This isn't about being warmer. It's about not swinging.
Most people fix a cold bedroom by adding thickness, then spend the night correcting for it — covers off at 2am, covers back on at 4am, awake at both.
A thin layer that holds a little warmth and moves moisture away doesn't fight the room or the comforter. It just narrows the swing.
Turn the thermostat down overnight and still get into a warm bed. That's the whole idea, and it's the same reason it works for people who run hot.
ON PRICE
Cooling sleepwear. Got expensive.
Look at what's sold as temperature-regulating sleepwear and you'll find sets well past a hundred and fifty dollars — bamboo, washable silk, technical knits. There's a reason that tier exists: enough people sleep badly because of heat that they'll pay to fix it.
Velthea does the same job with less material. Half a millimeter of knit, a top and a bottom, sixty-nine dollars.
The thinness isn't a compromise to get the price down. It's the mechanism.
WHO BUYS THIS
Three different reasons, same set.
COLD BEDROOM
The thermostat goes down at night
Because running it all night is expensive. This is the layer that means you don't have to choose between the power bill and getting into a warm bed.
GIFT
You're buying it for someone else
Top and bottom, three colors, sized by weight so you don't have to guess. Arrives boxed and folded.
FIND YOUR FIT IN 5 SECONDS
Sized by weight — not guesswork
Just three sizes, stretch does the rest:
| Size | Weight | Fit |
|---|---|---|
| M–L |
88–132 lb
(40–60 kg) |
Snug second-skin fit |
| L–XL |
132–176 lb
(60–80 kg) |
Snug second-skin fit |
| XL–2XL |
176–220 lb
(80–100 kg) |
Comfort second-skin fit |
Between sizes? Size up for comfort, down for maximum heat-lock.
Wrong size? Free exchange, no questions.
SPECIFICATIONS
The numbers, in case you want them.
Thickness
0.5 mm
Set contents
Long-sleeve top + leggings
Fabric
81% nylon + 19% spandex
with a soft-finish inner knit
Stretch & construction
Four-way stretch, seamless construction.
Sits close and moves with the body without bulky seams.
Feel
Smooth, lightweight second-skin feel with no wool.
Wear
Made to sleep in. Sits close without compressing, and moves when you turn over.
Care
Cold machine wash. Line dry.
No bleach. No ironing needed.
Weight of set
Approx. 150 g
Sixty nights. Then decide.
You can't tell from a photo how something sleeps. Wear it for two months. If you're still kicking the covers off, send it back for a full refund — worn, washed, doesn't matter.
BEFORE YOU ORDER
The questions people actually ask.
Is it too tight to sleep in?
It sits close but it doesn't compress — the stretch goes four ways, so it moves when you turn over. If you're between sizes, take the larger one.
Won't something this thin just be cold?
On its own in a cold room, yes — it's a layer, not a coat. Under a comforter it holds enough warmth to get you comfortable without holding the heat your body is trying to shed later in the night. That's the trade it's built around.
Can I wear it as a base layer under clothes too?
Yes. It started life as a base layer, and at 0.5 mm it disappears under a shirt. Plenty of people buy one set for each job.
Does it pill or go baggy after washing?
Wash cold and line dry and it holds its shape. The thing that damages it is fabric softener — it coats the fibers and slows the moisture movement, which is the part you're paying for.
Is it warm enough for a real winter?
It's a sleeping layer, not outerwear. Under normal winter bedding it's enough for most bedrooms. In an unheated room in a northern winter, most people add socks.
How long does delivery take?
3–7 business days anywhere in the lower 48, shipping free. Tracking emailed the day it leaves the warehouse.
What if the size is wrong?
Tell us and we'll send the right one — you don't ship the first set back. If it's still not right after that, full refund within 60 nights.
Narrow the swing.
Warm enough for a cold room. Thin enough that 2am stays asleep.