Carbon Lab Cleaning brush XL. The brush to clean your sneakers without unnecessary damage. Just a brush? Certainly not! This brush has been developed in the Collonil lab to optimally clean sneakers. We recommend using these brushes in combination with Carbon Lab Sneaker Foam. The natural hairs are designed to get deep into the fibers. They fall out as soon as they no longer have any added value. Why Collonil Carbon Lab? Because Outsole thinks it’s important that you go for quality and not for hype. Collonil has been the market leader in shoe care for years and thoroughly tests all its products on different sneakers. The ecological footprint is concerned as well: Carbon Lab is based on safe organic ingredients.