Spent coffee-ground material system

Where spent coffee grounds become premium leather.

KUNS is an innovative breakthrough that repurposes spent coffee grounds — a common urban waste — transforming them into a refined synthetic leather made for polished product applications.

Key Features

Engineered for integration, strength, and responsibility.

Three properties set KUNS apart from both traditional leather and conventional synthetics.

Seamless Integration

SEM (Scanning Electron Microscope) analysis confirms that the material's components integrate perfectly — without requiring additional chemical treatments.

Multi-directional Strength

Unlike traditional leather, KUNS has superior tensile strength in all directions (isotropic), making it easier to design products that withstand stress from every angle.

Eco-Friendly Alternative

A sustainable substitute for genuine leather — which relies on intensive animal farming and heavy chemical use — and for plastic-based synthetic leathers.

KUNS coffee-ground leather surface
Colorways

Available in three tones — inspired by the roast.

The current range offers three refined, true-to-material colours. Additional tones can be explored with partners during development.

Blonde Roast
Amber
#8A6A3A

A warm, golden-brown tone — the lightest of the current range.

Medium Roast
Coffee
#5A3E2B

A balanced red-brown with the warmth of freshly roasted coffee.

Dark Roast
Espresso
#2F231B

A deep, near-black brown — refined, quiet, and composed.

Spent coffee grounds
Why It Matters

A responsible material, backed by real science.

  • Repurposes a common urban waste into a high-value material.
  • A plant-based alternative — no animal hides, no petroleum PU or PVC.
  • Warm brown tones come from the coffee's own natural pigment.
Request a sample

See and feel the material for yourself.

Request a swatch card and specification support to evaluate KUNS against your product requirements.