Real mulberry silk that feels cool, soft and barely there, all day long.
Launch price: $19 a pair. Goes up to $22 on Dec 1.
Step 1: Choose your pack
Step 2: Pick a color and size for each pair
Free US shipping on orders $44+ · Discreet packaging
Pick your size by waist and hips. See the size guide below.
Step 7 of your routine: silk.
A high-waist brief knitted from 100% mulberry silk. Soft, smooth and breathable, with soft bound edges and no visible lines. The gusset is double-layer, with a silk inner layer.
Sizes XS–XL. Tags show Asian sizing (a US S tag says "L"). See the size guide below.
Fabric: 100% mulberry silk, knitted for stretch.
What silk is made of: mulberry silk is a natural protein fiber (silk fibroin) built from 18 amino acids, the same family of building blocks found in skin and hair. That's why it feels so smooth and soft against you.
Fit: high-rise brief with an elastic waistband that doesn't dig in, a 3D cut and soft bound edges.
Gusset: double-layer, with a silk inner layer where it matters most.
Find your size by waist and hips (US sizing):
XS: waist 25–29 in, hips 33½–35½ in, under 110 lb
S: waist 29–31½ in, hips 35½–37 in, 110–124 lb
M: waist 31½–34 in, hips 37–38½ in, 124–140 lb
L: waist 34–36½ in, hips 38½–40½ in, 140–154 lb
XL: waist 36½–39½ in, hips 39½–43 in, 154–165 lb
Between sizes? Size up. Tags show Asian sizing (a US S tag says "L"). Wrong size? We'll send a new one free.
Hand wash cold. No soaking, no wringing. Dry flat in the shade.
Free US shipping on orders $44+, otherwise $5. Usually delivered in 6–11 business days, in discreet, plain packaging.
Cloud-soft
Cool & breathable
Barely there
Silk fibroin protein
18 amino acids
Long, unbroken filaments
Smooth, round fibers
Absorbs moisture, stays dry-feeling
Breathable knit
Warm in winter, cool in summer
Mulberry-fed silkworms
Sound familiar?
Polyester and nylon don't breathe, so heat and sweat stay against your skin all day.
Cotton soaks up sweat but dries slowly, so it can feel wet and sticky when it's hot.
Breathable mulberry silk helps you stay cooler and drier, with less rubbing where it counts.
| Mulberry silk | Cotton | Synthetics | |
|---|---|---|---|
| Natural fiber | ✓ | ✓ | ✕ |
| Breathable | ✓ | ✓ | ✕ |
| Smooth, silky feel | ✓ | ✕ | Partly |
| Smooth against skin | ✓ | Partly | ✕ |
| Price per pair | from $11.40 | $3–15 | $3–15 |
silk diary
the softest thing you own should be the thing you wear every day.
so we kept it simple: one fabric, 100% mulberry silk, knitted light and stretchy in jiaxing, china's silk town. ten quiet shades. a high waist that stays put.
no fancy box, no luxury markup. just real silk, from $11.40 a pair.
— trendy muse
Not the right fit? We'll send another size at no cost. No need to send it back.
Damaged or wrong item? Send us a photo and we'll replace or refund it.
Every order ships in a plain package with no brand on the outside.
