Sleek & Sheek
Atelier Nº2 · Porto

A second skin,
built from the yarn.

Eight years ago I unpicked a €78 bra at my kitchen table in Lisbon and found a sandwich of cheap foam and plastic clips. This dossier is everything I’ve built since — knit in the round, on a single circular machine, with the lift, the hold and the breathability spun into the yarn before it meets a needle. No side seams. No glued panels. Nothing that leaves a mark by 4 p.m.

This is the long version. The honest one.

Mira A., Founder of Sleek n Sheek

Mira A.

Founder · Sleek n Sheek

JellySoft fabric draped over a sculptural form, Porto studio
JellySoft Nº482% recycled

The fabric, in facts

82%

Recycled nylon — recovered nets, post-consumer textile

9

Yarn suppliers refused before I signed the Guimarães mill

3

Patents on the JellySoft compression-zone system

100+

Wash cycles, lab-tested. No lift loss, no colour drift

0

Side seams. Knit in the round on one machine

12 hr

Real-body wear-test before any first run ships

12k+

Women now wearing the cloth I built for my sister

Œko-Tex

Standard 100 — certified at the yarn level, not the garment

Prototype Nº1 was sewn from whatever I could find in 2018. It worked, but I knew the moment I started sourcing in volume that a piece that holds — without hurting — cannot be sewn on. It has to be spun in. So I went back to the yarn.

JellySoft is 82% recycled nylon, recovered from discarded fishing nets pulled out of the North Atlantic and post-consumer textile waste collected in the Iberian Peninsula. The remaining 18% is a high-tenacity elastane core that gives the fabric its memory — the reason the bodysuit you put on tonight will look the same on washday forty.

Every cone is bath-dyed at the fibre stage, not the fabric stage. That is the slower, more expensive way to do it, and it is the only way the nude tones on your skin still look like skin after a hundred washes — instead of fading into something grey and tired by the third month.

If the yarn isn’t honest, nothing downstream of it can be.
Mira A., Founder

I refused nine suppliers before I signed the mill in Guimarães. The first ones could not match the recycled percentage without losing tensile strength. One could match it on paper, but the cones arrived inconsistent cone-to-cone — which means inconsistent stretch garment-to-garment, which means a woman somewhere is putting on a bodysuit that fits her wrong because of a spool she will never see. That isn’t a number I’m willing to round.

The Porto knitting atelier — cones of JellySoft yarn beside a 1960s circular knitting machine
Plate · 02735mm · Kodak Portra

Atelier Nº2

The Porto atelier I found in 2020. Family-run since 1962. Six weeks between every visit.

Open any drawer of conventional shapewear and run your finger along the inside. You will find a seam at the side, a seam under the bust, a seam across the hip. I know because I unpicked them, one after another, on the same kitchen table where Prototype Nº1 was born. Those seams are the cheap way to give a flat piece of fabric a body-shaped form. They are also why shapewear leaves red lines on the rib cage.

Our pieces are knit on a circular machine, the way a sock is knit — except calibrated to read a three-dimensional woman. The lift sits where you need lift. The release sits where you need to breathe. The compression bands fade gradient-style into one another rather than meeting at a stitched edge.

Macro view of the JellySoft four-way stretch knitMagnification · 20×
Knit pattern study showing compression-zone transitionZone transition
A side seam is just an apology for poor engineering.
Mira A., Founder

The other thing the circular knit does, quietly, is eliminate visible panel lines under a white t-shirt. There is no edge for the light to catch on. The garment ends where your skin ends — and not a millimetre before.

The pillars

Three principles
the knit never breaks.

Lift, never squeeze.

Three calibrated zones — core, hip, lower back — gradient-knit at different tensions on the same machine. The fabric does the work a piece of plastic boning used to do, without the bite at the end of the day. The same lift system Mira filed three patents on.

Breathe through the cloth.

Hydrogen-bonded yarn moves sweat outward instead of trapping it against the skin. An antimicrobial finish — bonded, not sprayed — lasts the lifetime of the garment. You can wear it twice between washes. Quietly.

Built to outlast its own season.

Bath-dyed yarn, recycled core, no glued reinforcements that crack after thirty washes. We test every fabric to one hundred wash cycles before it ever ships — and we replace the piece if it fails on you. The same promise Mira made the first woman who tried Prototype Nº1.

Three JellySoft weights — Whisper, Daily, Sculpt — folded on linen

The three weights

One yarn, three jobs.

Whisper

180 g/m²

Our lightest. Built for bras, slip dresses, and the days you want shaping you genuinely cannot feel.

Daily

240 g/m²

The everyday. Bodysuits, tanks, the leggings you reach for at 7 a.m. Smoothing, not squeezing.

Sculpt

320 g/m²

The dressed-up weight. Shapers and dresses where you want a defined line under silk — and still want to sit down.

From cone to closet

Eleven weeks, seven hands.

  1. Wk 01

    Yarn spool

    Recycled nylon, bath-dyed at the fibre, cone-tested for tension.

  2. Wk 03

    Circular knit

    Calibrated to three compression zones on a single seamless tube.

  3. Wk 05

    Heat-set

    Steam-set so the stretch returns to zero after every wear.

  4. Wk 08

    Wear-test

    Twelve hours on a real body across twelve fit models, XS — 4XL.

  5. Wk 11

    Hand-check

    Every first run inspected piece by piece before it leaves Porto.

The receipts

Tested
before it’s yours.

Every fabric we ship clears an independent third-party protocol. We share the numbers because they matter — and because most of our industry won’t.

Œko-Tex Standard 100

Certified at the yarn level. Zero harmful substances in contact with skin.

Martindale abrasion

40,000+ cycles to first pill. Industry benchmark for activewear is 20,000.

Colourfast wash

100 home-wash cycles at 30°C. Δ E < 1.5 (the eye can't see the difference).

Recovery after stretch

99.2% return-to-zero after 200% elongation. The fabric forgets every wear.

Moisture management

AATCC 195 grade 5 — wicks outward faster than 95% of performance fabrics.

Antimicrobial

ISO 20743 — bonded, not sprayed. Survives the lifetime of the garment.

Letter Nº IXThe fabric, signed

I could have made the fabric cheaper. Almost everyone in our industry does. I chose the slower yarn, the older machine, and the smaller mill — because the woman wearing this should never have to think about what it’s made of, and that only happens when I’ve thought about it for her.

Mira A.

Mira A.

Founder · Sleek n Sheek

Sealed

Lisbon · 2026