Make a Smaller Footprint with Sustainable Insoles
Sustainability at the Source
We believe in delivering the ultimate in insole comfort, performance, and support – while also providing sustainable insoles that both footwear brands and customers can feel good about. Our commitment to sustainability doesn’t just include using plant-based materials – it starts right at the source.
Sustainably Sourced Propanediol
Our proprietary PU foams are made with up to 60% Susterra® propanediol, made from U.S. industrial field corn. Susterra is partnered with the Truterra® program, supporting regenerative practices like no-till farming, crop rotation, and reduced fertilizer and pesticide use.
Susterra Bio-propanediol
Susterra uses the dent corn to create Susterra bio-propanediol, which replaces some of the main petrochemical ingredients in traditional polyurethane, saving carbon emissions and non-renewable energy use. This remarkable compound uniquely enhances our foam with higher rebound and flexibility.
The Susterra Difference
Using Susterra propanediol over petrol-based BDO significantly reduces GHG emissions and non-renewable energy use. It also enhances PU foams with better elongation and tear strength for more durable, flexible performance.
Benefits of Bio-Propanediol
*Based on a peer-reviewed 2024 life cycle assessment, comparing cradle-to-gate production of 100% Susterra bio-propanediol to petroleum-based BDO.
%
Greenhouse
Gas*
%
Non-Renewable
Energy*
Environmental Savings of Solution-Dyed Textiles
110,000
Gallons of Water
13,000
kilowatts of power
60,000
lbs OF CO2 EMISSIONS
Based on 1,000,000 insole pairs using solution-dyed over traditionally dyed fabrics per year.
Cleaner Colors With Solution-Dyed Textiles
INSITE® top cover textiles are made with DuraDye™ fabrics, which produce bold, long-lasting colors using a cleaner, more sustainable solution-dye coloring process. The DuraDye™ process adds color to the raw materials (PET pellets) as they are being melted and spun into yarn. This eliminates the need for a dye bath after the fabric is woven, resulting in 99% less water waste, plus additional power and CO2 savings.
Less Material Waste With Poured PU
INSITE insoles using Levation PU foams are poured or injected into molds, rather than being die-cut from PU sheets. The result is almost no industrial scraps, reducing material waste and increasing manufacturing efficiency.