• __SWATCH__Black Leonie & Co 3D Sculpting Arm Sleeves in black
  • Before and after photo of a customer's upper arms wearing the Leonie & Co arm sleeves, with her five-star review
  • Before and after photo of a customer's upper arms wearing the Leonie & Co arm sleeves, with her five-star review
  • Before and after photo of a customer's upper arms wearing the Leonie & Co arm sleeves, with her five-star review
  • Photos of customers holding their Leonie & Co arm sleeves, above a five-star rating
  • Customer satisfaction figures for the Leonie & Co arm sleeves, with a before and after photo
  • The Leonie & Co 3D Sculpting Arm Sleeves compared with an ordinary compression top
  • The Leonie & Co 3D Sculpting Arm Sleeves in beige, worn on both arms
  • Features of the Leonie & Co 3D Sculpting Arm Sleeves
  • Close-up details of the arm sleeves: knitted 3D lines, ribbed anti-slip band and fabric
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Arm Shaping

3D Sculpting Arm Sleeves | Beige

Award-Winning 2026 Innovation – Arm Shaping

200,000+ happy women

Smoother-looking arms, right away

Held, not squeezed, all day

Invisible under a sleeve

One size, no chart to decode

Color
Size

Find Your Perfect Fit

SizeUpper arm, flat (in)Lower arm, flat (in)Length (in)
One size fits all3.53.17.3

There is no size to pick. The figures above are the sleeve measured flat and unstretched. The knit stretches over the widest part of your arm and pulls back to shape, so it works from slim through fuller upper arms.

Position the top just below your shoulder seam and the bottom just above the elbow, so it does not fight the bend of your arm.

  • 📏 Tips :
    Stick to your usual size. If you're between sizes, we recommend sizing up for optimal comfort.

  • 🧵 Fabric Info :
    90% polyamide, 10% elastane. Four-way stretch, one size, sold as a pair.

  • 🧵 Care :
    Machine wash at 30°C with like colours. No bleach, no ironing, no tumble drying, no dry cleaning. Reshape and air dry flat and they will keep their stretch far longer.

  • 🔁 Easy Exchange :
    If the size isn't right once you receive your order, no worries: simply send the item back and we’ll ship you the correct size.
   Last Items in Black & Beige

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Before & After from our customers ⭐

Before & After Emma (38 years old)

User for 8 months

For years I only wore long sleeves, even in summer. Creams did nothing. A few weeks in, my arms looked smaller and the skin underneath sat flatter instead of hanging. Eight months later I wear tank tops again. At 58, I didn't think that was possible.

Bafore & After Claire (43 years old)

The part weight loss never fixed

I lost 26 lbs and I am proud of it, but the skin on my arms did not bounce back. It just hung there. Wearing these daily, the arm reads smooth under a sleeve and the loose skin stays put. I do not hide them any more.

Before & After Hannah (31 years old)

A guest at my daughter's wedding

My daughter's wedding was coming up and the loose skin on my arms was bad. I almost changed my dress. I wore these every single day for two months. On the day I wore MY sleeveless dress, and my arms looked smooth in every photo.

Before & After Charlotte (36 years old)

Before & After Sophie (41 years old)

The sleeve you can wear under anything, from a work blouse to a summer dress.

Leonie & Co arm sleeves are knitted with 3D relief lines running the length of the arm, not printed on. A ribbed band at each end keeps them exactly where you put them.

Pull them on and the line is smooth straight away, from the elbow up. The knit is thin, matte and seamless, so nothing shows through a sleeve.

What they do

  • Hold the upper arm evenly, never pinch
  • One smooth line under close-fitting sleeves
  • Ribbed band top and bottom, so they stay put and don’t roll
  • Knitted 3D relief, not printed. Nothing to crack or peel
  • Thin, matte and breathable, invisible under clothes
  • Sold as a pair

Size and fit

One size fits all. Measured flat, unstretched: 18.5 cm long (7.3″), 9 cm across the top (3.5″) and 8 cm across the bottom (3.1″). The knit stretches well beyond that, and the ribbed bands hold it in place.

Seamless knit.

The upper arm is the one place most women cannot dress around. Sleeves ride up, cardigans come off when the room gets warm, and the changing room mirror catches it every time. This is not a treatment and it is not a promise about your body. It is a garment that changes what you see, the moment you put it on. A close, consistent knit holds the soft tissue of the upper arm smooth instead of letting it move. That is the whole mechanism, and it works the second it is on, not in six weeks.

  • Even pressure from just above the elbow to the shoulder
  • Ribbed band at each end, so it does not roll down
  • Knitted relief, not printed. Nothing to crack or peel
  • Thin and flat-finished, no visible edge under a blouse
  • One size, four-way stretch. Sold as a pair

Order
confirmed

Dispatched
within 24–48h

Delivered in
5-7 working days

Returns :

- You have 30 days to return the product if it’s not right for you.

- We offer hassle-free exchanges or quick refunds.

View full details
Leonie & Co 3D arm sleeve with knitted relief lines

HOW IT WORKS

Even pressure, elbow to shoulder

A close, consistent knit holds the soft tissue of the upper arm smooth instead of letting it move. That is the whole mechanism. There is no routine to follow, nothing to apply, and nothing to wait for. Roll them on and the smoothing is what it is straight away. That is the honest test, and it is the one we would want you to run.

Buy Now ➞

Loved by over 200,000 women

THIN ENOUGH TO DISAPPEAR

Under a blouse, nobody knows

Flat-finished and light enough to sit under a work shirt or a cardigan without a visible edge. Position the top just below your shoulder seam and it vanishes. Beige is the one to pick if you want them unnoticed on show, Black if you would rather they read as part of the outfit. Made for all-day wear. Take them off at night.

Shop the offer ➞

Loved by over 200,000 women

Seamless 3D arm sleeves worn under everyday clothes

WHAT OUR CUSTOMERS THINK

They stopped hiding their arms. When will you?

Rated 4.9/5 – Excellent

Loved by over 200,000 women

  • 5 stars: 16 (80%)
  • 4 stars: 4 (20%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
This product has no reviews of its own. The merchant grouped it with related products, so the reviews shown are from across that group.
C
Catherine W.
Tidier around the underarm

The area that concerned me most looks much neater.

N
Naomi Q.
Easy care

Rinse, hang, done. No special treatment needed.

M
Malika Y.
Consistent all day

The pressure does not fade after a few hours.

E
Ella N.
The smoothing is real, price less so

The quality is there, so I understand it, but it is not cheap.

C
Caroline E.
They solved my problem

I had stopped wearing half my summer wardrobe. It is all back in use.

F
Farah P.
Good weight of fabric

Substantial enough to smooth, thin enough to stay cool.

E
Evelyn D.
Good for long days out

A full day of sightseeing with no adjusting and no discomfort.

C
Cassie T.
They look natural

The edges do not create a line, so nothing looks obviously worn.

J
Josie Y.
Comfortable, shows lint

Dark fabric picks up fluff. A quick brush sorts it out.

Z
Zainab U.
Really happy with these

They do what they claim and they are comfortable.

K
Kelly P.
I will order again

Already planning a spare pair for next summer.

H
Heather A.
I will order again

Already planning a spare pair for next summer.

E
Elizabeth J.
Great with a strappy top

The combination looks intentional rather than like a cover-up.

H
Heidi H.
Great with a strappy top

The combination looks intentional rather than like a cover-up.

B
Brooke Z.
Even pressure along the arm

Not tighter in one spot than another, which I appreciate.

H
Helen O.
Even pressure along the arm

Not tighter in one spot than another, which I appreciate.

W
Wendy N.
Solid, clearer sizing would help

It worked out in the end, but I would have liked more measurement guidance.

H
Holly V.
Solid, clearer sizing would help

It worked out in the end, but I would have liked more measurement guidance.

L
Louise I.
A small change, a big difference

Two sleeves, and my summer wardrobe feels wearable again.

H
Hope C.
A small change, a big difference

Two sleeves, and my summer wardrobe feels wearable again.

NEED HELP ?

Your questions, answered.

Here’s everything you need to know about our product

No. A sleeve does not remove tissue, and we are not going to imply it does. What it does is hold the soft tissue of your upper arm smooth and still, so it does not move when you do. That is usually the part that bothers women most. Waving at someone, reaching for a shelf, lifting a grandchild.

This is the single most common reason women buy them. You did the hardest thing you have ever done and got handed loose upper arms as the receipt. A sleeve is not surgery and does not pretend to be. It gives you back sleeveless tops, short sleeves in summer, and the changing room mirror.

A ribbed band at each end grips flat without pinching, and the pressure stays even along the whole length rather than concentrated at the top. If you get a visible groove, or a mark still there twenty minutes after you take them off, the fit is wrong for your arm. Do not push through it.

There is no size to pick. It is a four-way stretch knit that pulls over the widest part of your arm and then draws back to shape rather than hanging loose, so it works across a wide range of upper arms, slim through fuller. No tape measure, no chart to decode.

Yes, you have 30 days to return the item. We offer fast and easy exchanges or refunds if needed.

We ship your order within 24 hours. Delivery usually takes 5–7 working days.