Usually a combination of materials.įlyknit: A lightweight, form-fitting polyester yarn shoe upper, designed to reduce material waste by eliminating the need for multiple panels. Upper: The part of the shoe that wraps around the foot.Treads: The part of the outsole that comes directly into contact with the ground or floor.Toe box: The front of the shoe, housing the toes.Overpronation occurs when the foot rolls excessively inward. Pronation: The foot’s natural roll following a footstrike.Outsole: The bottom layer of a shoe, designed to come in contact with the ground or floor.Midsole: The cushioned layer between the upper and outsole.

Lugs: Rubber treads on the outsole, generally meant to improve traction.Gait: A person’s style of walking or running.Also sometimes called the “ball” of the foot. Forefoot: The front section of the bottom of your foot.Footstrike: The moment (while running or walking) when the entire foot lays flat on the ground.Drop: The height difference from heel to toe.Crash zone: The area of your foot that strikes the ground first, absorbing the most impact.Collar: The part of the shoe that surrounds your upper heel.Similar to EVA but heavier and denser, resulting in less natural compression. Generally more durable than EVA and it lasts longer before wearing down. Made up of lots of minuscule cells filled with air, EVA compresses when weight is placed upon it over time, it doesn’t decompress as effectively. EVA: A light, flexible copolymer or cross-linked foam composed of ethylene (E) and vinyl acetate (VA).Some of these terms might be included in descriptions of brand-specific technologies below. To aid your quest, we’ve put together a short glossary of related terminology with which you may or may not be familiar. When searching for the right pair of runners, you might come across some unfamiliar vocabulary. Nike’s Adapt BB shoes let you tighten your laces with an iPhone The world’s most eco-friendly shoes are made of algae, cork, and bison fur Nike Fit aims to help you slip into your new sneakers more easily

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