Leather-lined latex footbed
Our footbeds are lined in leather and filled with natural latex, tapped from trees.
No compromise until the material is right
Every material at SOLK has to meet two requirements: perform on the foot, and return to nature afterwards. When no existing material could do both, we made our own. Fade Foam™ is the first.
TANNED IN GERMANY
Leather, Reimagined
Developed over years with a heritage German tannery. No chrome, no heavy metals, no compromise on softness or character.
Every input meets our biocircularity requirements while keeping the refined finish of exceptional leather. It breathes, softens and gains character with wear. When its job is done, it returns safely to the cycle it came from.
TAPPED FROM TREES
Pure Natural Rubber
The best materials are still made by nature.
Our natural rubber soles are produced through a traditional process that few still practice today. Tapped from trees by hand, each sole is given time to shrink, dry and settle naturally, creating dependable grip, lasting flexibility and comfort that feels remarkably alive underfoot.
BUILT BECAUSE IT DIDN'T EXIST
Fade Foam™
We looked for a cushioning material that could deliver exceptional comfort and a biocircular future.
We couldn't find one. So we built one.
Fade Foam™ is soft enough to absorb impact and firm enough to support the foot, engineered to return safely when its work is done.
ZERO-WASTE KNITTED
Three Yarns, One Purpose
No cutting. No offcuts. No waste.
Knitted to shape from carefully selected plant-derived fibres, our linings deliver softness against the skin, breathability and durability exactly where they're needed.
One factory. One roof. Full control.
We chose to keep things close. Every SOLK is built under one roof by a team we know, using processes we control. No outsourcing, no shortcuts, just the ability to refine materials with real craftsmanship at every stage.
Even the 'invisible' parts are chosen
A shoe is more than its leather, sole and foam. It's thread. Glue. Lace tips. Footbeds. Paddings. In a SOLK, every component is carefully checked and earns its place. Not just the ones you can see.
Laces
Wood-based fibers, soft and secure.
Biobased Glue
Strong enough to hold, safe to dissolve.
Full Leather Lining
Softens with wear, safe to return. Perforations for breathability.
Compostable Lace Tips
Even the smallest details are made to fade.
Plant-Based Insole
Comfort and care as foundation.