The waffle knit — huáfūgé (华夫格) — is a textile structure with a history rooted in function. Its distinctive grid of raised squares was engineered to trap warmth while allowing the fabric to breathe, a construction that prioritises the wearer's comfort above all else. Over time, it moved from workwear and thermal underlayers into the vocabulary of considered casual dressing, valued precisely because it is a fabric that does its job without drawing attention to itself.

Sī is built on that sensibility entirely. The waffle-knit cotton gives the set its quiet visual texture — a surface that is neither flat nor decorative, but structural, the kind of detail you notice only when you look closely. The silhouette is a relaxed long-sleeve Henley top with a round neck and a short button placket at the throat, paired with full-length wide-leg trousers. It is a form that exists at the intersection of the loungewear and the considered everyday — unhurried enough to sleep in, composed enough to receive a guest without a second thought.

A small embroidered label at the hem of the top — the brand mark, stitched in white on black — is the only decoration on an otherwise entirely unadorned garment. It is precisely the right amount.

Key Features

• Waffle-knit (huáfūgé 华夫格) cotton texture — structured, breathable, and quietly distinctive
• Relaxed long-sleeve Henley top with a round neckline and short button placket at the throat
• Matte black buttons — understated and precisely finished
• Small embroidered brand label at the hem — a single, considered mark of craft
• Ribbed cuffs on the sleeves — close-fitting, clean, and skin-kind
• Full-length wide-leg trousers with an elasticated waistband and two side pockets
• Relaxed H-line silhouette — ergonomically cut to flatter all body shapes without defining them
• Fabric composition: 95% cotton, 5% spandex — softness level 5, lightweight and breathable

Available Colours

• 浅灰 Light Grey — a cool, clean grey that reads as effortlessly modern; the most versatile of the four, and the easiest to wear
• 咖色 Camel — a warm, earthy tone that sits between sand and tan; the most unexpected of the colourways, and the most quietly confident
• 深灰 Charcoal — a deep, composed grey with just enough depth to feel authoritative without heaviness
• 墨黑 Ink Black — complete and uncompromising; for those who have always understood that black is not a default but a decision

Premium Materials

• 95% high-grade cotton — processed using advanced softening technology to achieve a softness index of level 5; the waffle-knit construction adds tactile depth while remaining light and breathable against the skin
• 5% spandex — integrated for gentle stretch and recovery, so the set moves freely with the body without pulling or losing its shape across long hours of wear
• A fabric that breathes, yields, and softens further with every wash — made to be worn often and kept for a long time

Sī is for the evenings that belong to no one but yourself. Put it on and let the quiet settle in.