Polyurethane (which is a real mouthful to say) features heavily on sneaker soles thanks to its near-perfect list of properties. First developed in 1937 in Germany, the pliable material solves thousands of years’ worth of problems encountered when trying to finding a material to put between feet and earth.
Polyurethane is both hardwearing and light, waterproof and abrasion-resistant; ergo perfect for sports shoes, which need to be comfortable and robust in equal parts. Even better, the textile can be compressed many times without losing its shape or flexibility.
Best for: Thanks to its durability and solid but compressible nature, polyurethane is best used on trainers.
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