Sustainability marketing in footwear often focuses on materials: recycled uppers, plant-based foams, carbon offsets. These efforts matter—but they don’t address the largest source of waste in the system.
The biggest problem isn’t what shoes are made of.
It’s how many perfectly good shoes never get used.
According to research published by McKinsey & Company and The Ellen MacArthur Foundation, overproduction and underutilization are primary drivers of waste across consumer goods industries. Footwear is no exception.
A shoe made with recycled materials that never gets worn still consumes energy, labor, and resources. Sustainability only works when products are actually used.
This is where secondary markets play a critical role.
Keeping a shoe in use—even through a second owner—dramatically reduces its per-use environmental footprint. Extending product life is one of the most effective sustainability strategies available, often outperforming material substitutions alone.
Relay’s model addresses this directly. By recovering value from unworn returns and excess inventory, Relay prevents unnecessary disposal and reduces demand for new production—without asking consumers to compromise on performance or trust.
Sustainability isn’t just about making better shoes.
It’s about wasting fewer of the ones we already made.
Sources referenced:
McKinsey & Company • Ellen MacArthur Foundation • MIT Sustainable Supply Chains