Having made its name designing clothes inspired by innovations in science and technology, C2H4 has now applied its futuristic aesthetic to two classic Vans silhouettes: the Era and Old Skool. Taking inspiration from ozone generator machines, the C2H4 x Old Skool 'Ozone Generator’ features a granite gray upper with tonal blue on the midsole and laces. Instructions for the generator are written in a fine print on the lateral side, while the blue eyelets are marked with ‘input’ and ‘output’. The inner-workings of the machine are printed on the translucent outsole.