SLIMZtech · High-Density Interlock
The fabric that does a bra's job.
A dense, double-faced knit we spent two years developing. The support is knitted into it — so nothing has to squeeze, wire or strap you in.
Inside the mills
Three specialist mills. Two years of development.
This isn't a basic knit with a new label. Our yarn is spun to a blend we developed, dyed before it's ever knitted, and knitted in a separate mill into High-Density Interlock. Here's what that looks like.
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The yarn
Spun and twisted to our own blend — 98% polyamide, 2% elastane — for grip that holds and stretch that moves.
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The dye
The yarn is dyed before it's knitted, so the color is part of the fabric and stays through the wash.
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The knit
Knitted dense and double-faced into High-Density Interlock — the structure that does a bra's job.
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The check
The fabric and every piece cut from it is inspected by hand before it becomes a SLIMZ top.
SLIMZ vs the alternatives
Why the knit matters
Patterns developed through fittings on a wide range of body types, from XXS to XXL — in a fabric that holds you on its own. Here's how that compares with what you'd otherwise wear.
| What you want | SLIMZ | Bra + a top | Shapewear |
|---|---|---|---|
| Lifts and supports, no bra | ✓ | Needs the bra | Sometimes |
| One layer that looks finished | ✓ | Two layers | Needs a top over it |
| Nothing digs or squeezes | ✓ | Straps and wires | Built to compress |
| Comfortable all day | ✓ | Sometimes | Rarely |
What the fabric does
Engineered, not compressed.
Everything a SLIMZ top does comes from the knit itself. Here's what that means when you wear it.
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Problem: Soft fabrics with no structure
With SLIMZ: Support on its own. The density of the knit gives lift and hold through DD+, with no bra underneath.
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Problem: Knits that stretch out and bag by noon
With SLIMZ: Keeps its shape. The interlock holds its line wear after wear. It doesn't roll at the hem or dig at the straps.
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Problem: Shapewear that traps heat
With SLIMZ: Breathable. Built to breathe rather than trap heat. It is a substantial fabric, so you'll notice it more in high summer than under a jacket.
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Problem: Colors that fade in the wash
With SLIMZ: Color that stays. Dyed at the yarn stage, before knitting, so the color is part of the fabric.
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Problem: Thin tops you can see through
With SLIMZ: Opaque in every color. It doesn't hide texture, which is why some customers add our Nipple Covers.
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Problem: Tight-and-itchy compression
With SLIMZ: Soft on the skin. Soft against the body, so it holds you without feeling like shapewear.
Care
Look after it and it looks after you
Dense knits last for years when they're treated gently.
- Hand wash, cold Cold water and a mild detergent. Don't wring or twist it.
- Dry flat, in the shade Lay it flat out of direct sun. The knit keeps its own shape.
- No dryer, bleach or iron And no dry cleaning. The knit keeps its own shape; harsh treatment is what breaks it.
- Wash it less often It lasts longer and saves water: a single wash uses around 18 gallons.
Fabric questions
Everything about the fabric
What is High-Density Interlock?
It's the knit behind every SLIMZ top: a dense, double-faced interlock made from yarn spun to our own blend. The density is what gives the fabric its structure, so it can support you without cups, wires or compression.
Will it make me sweat?
It's designed to breathe rather than trap heat, and many customers wear it all day in every season. It is a substantial fabric, so you'll feel it more in high summer than under a jacket.
Does it stretch out over time?
No. The knit is built to keep its shape and hold wear after wear. Washing it by hand and drying it flat keeps it that way.
Is it see-through?
No, it's opaque in every color. It doesn't hide texture, though, which is why some customers wear it with Nipple Covers.
Is it OK for sensitive skin?
Everyone's skin is different, but the fabric is soft against the body and most customers with sensitive skin find it comfortable. Try it on at home first: unworn, with the tags on, it can be returned or exchanged within 30 days.
Why is the first wear snug?
That's the density doing its job. Step into it, bring it up to your waist, then put your arms through — after a wear or two it goes on easily.
Reviews
What women say about the fabric
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“I've been wearing this top almost every day for six months. No bra, and it liiifts, looks amazing, and is insanely comfortable. I'm not going back.”
Michal S. Tank Top
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“I'm obsessed with it. It works for me day to day and for evenings. It always looks quality and considered even though it's 'just' a top, and that suits me every time.”
Shira Tank Top
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“The fabric really does sculpt, it's comfortable, and it's great that there's a size range.”
Roni Halter Top
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“Gorgeous, sculpting top. I have a large chest and I feel the support all day long.”
Dana S. Halter Top
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“Really happy with it! Flattering, holds you in, and makes you look slimmer!”
Anna B. High Neck Top
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“Honestly I liked it much more than the regular cut — the closed neckline is very flattering and the color is gorgeous.”
Dana S. High Neck Top
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“Gorgeous top, holds wonderfully, and sits beautifully on the body!!!”
Tal B. One Shoulder Top
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“The first time I've genuinely enjoyed a product like this. I took it in every color.”
Ruti T. One Shoulder Top
Reviews from SLIMZ customers worldwide, translated where needed.
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