In Resources category, 3D Printed insole overcomes by 35% the impacts of a classic insole. Relating to materials, the team report the “impacts from 3D printed insole are 65% less than a classic one in the four impact categories.” The research team notes that the length of time the insole takes to print is a considerable factor in relation to environmental impact, and one that varies drastically regarding the 3D printer that is used.