PER-ADRA
Per-Adra Mix sock on a foot, side view

Almost barefoot.Only better.

Thin climbing socks from Japan. They hold your foot in the shoe, breathe and never dig in.

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Per-Adra socks are designed for climbing shoes. So thin you barely notice them. Grippy yarn on the toe and heel keeps your foot in place, the mesh arch breathes and the toe is closed without a raised seam, so nothing digs in.

Feel
Minimal thickness. You feel the foothold, not the sock.
Stability
Grippy yarn on the toe and heel. Your foot stays put in the shoe.
Hygiene
A clean layer between your foot and the shoe. Your feet stay clean, your shoes stay fresh.
Close-up of a Per-Adra sock

Five places that make the difference.

Scroll to walk through it from toe to heel tab.

1 / 5 Toe

Keeps your toes in place.

Grippy split-fibre yarn limits how much your toes can slide. The toe is closed without a raised seam, so nothing presses in a tight shoe.

2 / 5 Arch

Breathes and dries fast.

The mesh knit ventilates and the quick-drying yarn moves sweat away. Take your shoes off between routes and the sock has time to dry.

3 / 5 Heel

Stays on when you heel hook.

Grippy yarn and a reinforced knit. Solid where the sock takes the most abuse.

4 / 5 Heel tab

Protects your Achilles.

It shields your heel from rubbing against the shoe and helps you pull the sock on.

5 / 5 Body

You feel the hold, not the sock.

A thin, stretchy knit that fits like a second skin. No wrinkles and no excessive compression.

Feel

Climbing without distractions.

The very thin, light knit hugs your foot and does not bunch up. Your sole keeps its sensitivity, so you stand on a small foothold as precisely as you would barefoot.

Stability

Think about the move, not the shoe.

Your foot does not slide inside the shoe. More precise placement on small footholds and a heel that holds when you hook.

Hygiene

Clean feet, clean shoes.

There is a clean layer between your skin and the shoe, and you wash it after climbing. Sweat stays in the sock, so your shoes smell less and last longer.

What the sock does and why it matters.

Almost like barefoot

You feel the hold, not the sock.

The very thin, light knit fits your foot like a second skin. Your sole keeps its sensitivity.

Stability in the shoe

Your foot stays put.

Grippy split-fibre yarn on the toe and heel limits toe movement and helps keep your heel in when you hook.

Reinforced toe and heel

Solid where it takes a beating.

The areas under the most stress are reinforced. The rest of the sock stays as thin as possible.

Less pressure and friction

Nothing presses, nothing rubs.

The toe is closed without a raised seam and the heel tab protects your Achilles from chafing. It helps reduce pressure points in a tight shoe.

Dry feet

Breathes and dries fast.

The mesh arch ventilates and the quick-drying yarn moves sweat away.

Clean feet, clean shoes

Hygiene you carry with you.

You will appreciate it most in rental shoes that dozens of people have worn before you.

Easy to put on

Slide in, even in July.

A sweaty or swollen foot glides into a tight climbing shoe over the smooth sock without a fight.

Knitted in Japan

Made in Japan.

Developed with a Japanese knitting mill. The yarns, cut and finishing were chosen for a climbing shoe, not borrowed from a running sock.

Most climbers climb barefoot. Here are five reasons to try it differently.

Climbers wearing Per-Adra socks

  • Hygiene

    Heat and moisture in a shoe are ideal for bacteria. In rental shoes worn by dozens of people before you, your own clean sock is the baseline.

  • Less friction

    A thin layer helps reduce pressure points and blisters during long sessions.

  • Longer shoe life

    Sweat ends up in a sock you can wash. You cannot wash the shoe.

  • Easy to put on

    A sweaty, swollen foot slides into a tight shoe over the sock.

  • Warmth

    For cold days at the crag, or for people whose feet are always cold.

250,000 sweat glands sit in your feet, the densest concentration on the body. In a shoe made of rubber and synthetics, the sweat has nowhere to go.

0.97 is the density of the Tsunooga fibre in Ice socks. It is lighter than water and much stronger than polyester.

Left and right. The socks are not interchangeable. Each one is shaped for its foot, just like a climbing shoe.

What a barefoot climber will say.

“I will lose feel.”

True for an ordinary sock. It is thick and it bunches up. Per-Adra is thin and close-fitting, so the difference from a bare foot is minimal.

“It will slip when I heel hook.”

That is exactly why the heel and toe use grippy split-fibre yarn. It keeps your foot in place.

“Socks are for beginners.”

In Japan climbers of every level wear them, from first-timers to performance climbers.

“My shoes are sized for bare feet.”

The thin knit takes up very little room. With very tight shoes we recommend trying them first.

One sock, four versions.

The base is always the same: a thin stretchy knit, grippy toe and heel, mesh arch, a toe without a raised seam and a heel tab. The lines differ in look, toe construction and material.

Solid NavySolid BlackSolid GreySolid Lavender

Solid

The staple for every session.

A performance sock for climbing, sport and everyday wear. The thin, light construction keeps your foot stable in the shoe and preserves the feel in your sole. Single colour.

Navy

Composition: 74% polyester, 18% nylon, 5% polyurethane, 3% viscose

Mix BlueMix BlackMix PinkMix Tropical

Mix

Same sock, melange knit.

Built like Solid, with a melange you can spot from across the gym.

Blue

Composition: 74% polyester, 18% nylon, 5% polyurethane, 3% viscose

Tabi BlackTabi Grey

Tabi

Separate big toe. Extra precision.

A split-toe cut based on traditional Japanese footwear. It reduces friction between the big toe and its neighbours, which helps ease discomfort in tight climbing shoes. For climbers who stand mostly on the big toe.

Black

Composition: polyester, nylon, polyurethane

Sizes

Between sizes? Take the smaller one, the sock should fit snugly.

SizeFoot lengthEU
SS20 to 22 cm30 to 33
S22 to 24 cm33 to 38
M24 to 26 cm38 to 43
L26 to 28 cm43 to 46

Ice

Cool from warm-up to last attempt.

A sock for overheated gyms, summer and anyone whose feet sweat a lot. It contains Tsunooga®, a high-strength polyethylene fibre from the Japanese company Toyobo that conducts heat well and feels cool to the touch.

Composition: 39% polyethylene, 32% polyester, 21% nylon, 5% polyurethane, 3% viscose
Colour: Panda

Per-Adra Ice Panda
Drag or scroll to turn it around.

Why it is so thin.

Close-up of the mesh knit

If thinness were the only goal, tights would do. The task was harder: combine minimal thickness, less movement in the shoe, breathability, a close fit without excessive compression and no seam pressing on the toes.

Together with our knitting mill in Japan we looked for yarns and a knitting method that keep all of this in balance. We put grippy split-fibre yarn on the toe and heel. We knitted the arch as a mesh and chose yarns that dry quickly. We close the toe without a raised seam. And the heel tab protects the heel from rubbing against the shoe.

Through hardship to the stars.

Per-Adra is a Japanese climbing brand founded in 2017. Its name comes from the Latin “Per aspera ad astra”, through hardship to the stars. That is why there is a star in the logo. It makes climbing shoes and socks, which are knitted in Japan. Vibe Trade brings them to Europe.

  1. Since the 15th c.

    Tabi, socks with a separate big toe, are worn in Japan.

  2. 1980s

    Tight shoes with sticky rubber arrive. Climbers drop their socks.

  3. 2008

    Toyobo introduces the Tsunooga fibre, now part of the Ice line.

  4. 2017

    Per-Adra is founded in Japan and launches its first climbing shoes.

  5. Later

    Solid and Mix socks, then Tabi and Ice. New seasonal colours every year.

  6. 2026

    Per-Adra comes to Europe.

What climbers ask.

Will I lose feel in socks?

The sock is very thin and fits without wrinkles. Most climbers barely notice a difference from bare feet.

Do I need bigger climbing shoes?

No. The knit takes up very little room. If you wear your shoes painfully tight, try the socks in training first.

Which size should I pick?

Go by your foot length in centimetres. Between sizes? Take the smaller one, the sock should fit snugly.

Tabi or classic?

The classic cut is the all-rounder. You will like Tabi if friction between your big toe and second toe bothers you in a tight shoe, or if you want to feel the big toe separately.

When should I reach for Ice?

In summer, in an overheated gym and when your feet sweat a lot.

Are they good for rental shoes?

That is where they make the most sense. Between your foot and a shoe that dozens of people wore before you sits your own clean sock.

Can I wear them off the wall?

Yes. For running, at the gym and in trainers.

Want to sell Per-Adra?

A small product climbers buy again and again, and a natural fit for shoe rental. Our distributor Vibe Trade will send you wholesale terms and samples.

  • Add-on sale with repeat purchases
  • Hygiene for your shoe rental
  • Japanese quality with a clear story
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