arch4 is a way of seeing luxury—quiet, intentional, and deeply rooted in integrity. Founded in London in 2017, the label redefines modern cashmere through a lens of sustainability, craftsmanship, and understated sophistication. Each piece embodies a balance of opposites: minimal yet warm, refined yet effortless, masculine in structure yet feminine in sensibility.

Guided by a philosophy of timeless design, arch4 transforms the world’s finest, responsibly sourced cashmere into pieces of enduring beauty. The softest textures meet architectural precision, resulting in garments that feel as natural as they look considered. Our colour palette—drawn from nature yet enlivened by vibrant, modern hues—reflects our commitment to authenticity and expression.

Every stage of our process is shaped by care—for people, for animals, for the planet. Certified by the Global Organic Textile Standard (GOTS), our collections are crafted with respect and transparency, honouring both the material and its origins. With each season, arch4 continues to evolve, guided by a belief that true luxury lies in conscience, craftsmanship, and quiet confidence.