Sole: EVA Phylon.**

Insole and Upper: Synthetic fabric

**Phylon is made from EVA (Ethylene Vinyl Acetate) by using a compression moulding technique. Expanded EVA, the foamed stuff, will be loaded into a mould, which is then put into a heat press. While it’s in the press, the air bubbles in the foam will expand even more, which will result in a lighter, more springy midsole. It’s kind of like a twice-cooked foam.

Editor's note: Nike use Phylon as the base for all of their Lunarlon technology and have pioneered ways to produce dual density soles using this technique. For more info about trainer materials, see here.