Under the Radar

Trendiness score

51 of 100

Popularity score

39 of 100

Brand fans

Product saves

London

https://www.arch4.co.uk

Style keywords

Minimalist

Masculine

Timeless

Sustainable

Luxurious

About the brand

Arch4 is a luxury sustainable fashion label established in London in 2017, specializing in exquisite cashmere products for men and women. The brand is renowned for its chic, minimal, and ever-so-slightly masculine aesthetic that embodies timeless and effortless sophistication. Arch4 uses only the finest Mongolian-sourced organic cashmere, carefully selected for its unmatched softness, lightness, and warmth. The brand's design philosophy draws inspiration from architectural textures while maintaining a color palette inspired by nature. Committed to environmental responsibility, Arch4 ensures all products are responsibly sourced and manufactured, with processes certified by the Global Organic Textile Standard (GOTS). The innovative techniques combined with expert craftsmanship create truly unique pieces that transcend seasonal trends, offering customers a trans-seasonal wardrobe built on principles of quality, sustainability, and ethical manufacturing practices.

London

https://www.arch4.co.uk

Instagram

35k followersOpen in app

What people are saying

Who What Wear

ARCH4's impressive sustainability credentials are well worth checking out.

Nov, 2024

Harper's Bazaar

From traceable cashmere brand Arch4, this ivory sweater is best styled with l0w-slung, loose-legged trousers for an effortless working-week look.

Nov, 2024

Medium

Founded in London in 2017, this cashmere brand's quality is comparable to Erdos of a few years ago, exceptionally soft.

Sep, 2024

Who What Wear

I urge you to check out Arch4 if you haven't already. It specialises in making cashmere feel contemporary, with bright colours, fashion-forward silhouettes and plenty of cosy accessories.

Oct, 2023

Good On You

Brands' animal welfare policies and, where applicable, how well they trace their animal-derived products are the focus of our “Animals” rating. Here we rate arch4 “It's a Start”.

Jul, 2025

Medium

The fit has a bit of a slouchy vibe, with loose, basic cuts for both men and women.

Sep, 2024

Medium

Arch4's cashmere sweaters are about 3,000 RMB more expensive than Crush Collection, around 7,000 RMB.

Sep, 2024

Good On You

Based on all publicly available information we've reviewed, we rate arch4 “Not Good Enough” overall.

Jul, 2025

Good On You

There's no evidence it ensures workers are paid living wages in its supply chain.

Jul, 2025

Good On You

There's no evidence it uses any lower-impact materials.

Jul, 2025

Who What Wear

ARCH4's impressive sustainability credentials are well worth checking out.

Nov, 2024

Harper's Bazaar

From traceable cashmere brand Arch4, this ivory sweater is best styled with l0w-slung, loose-legged trousers for an effortless working-week look.

Nov, 2024

Medium

Founded in London in 2017, this cashmere brand's quality is comparable to Erdos of a few years ago, exceptionally soft.

Sep, 2024

Who What Wear

I urge you to check out Arch4 if you haven't already. It specialises in making cashmere feel contemporary, with bright colours, fashion-forward silhouettes and plenty of cosy accessories.

Oct, 2023

Good On You

Brands' animal welfare policies and, where applicable, how well they trace their animal-derived products are the focus of our “Animals” rating. Here we rate arch4 “It's a Start”.

Jul, 2025

Medium

The fit has a bit of a slouchy vibe, with loose, basic cuts for both men and women.

Sep, 2024

Medium

Arch4's cashmere sweaters are about 3,000 RMB more expensive than Crush Collection, around 7,000 RMB.

Sep, 2024

Good On You

Based on all publicly available information we've reviewed, we rate arch4 “Not Good Enough” overall.

Jul, 2025

Good On You

There's no evidence it ensures workers are paid living wages in its supply chain.