cool idea , reuse your old sneakers(trainers for the non US folk) by slapping your own design or one of many pre designed(ie purchaseble) funky stickers which should hug those shoes tight and stretch as if it were made by the manufacturer themselves

from the site:

We’ve developed a revolutionary new sticker application for sneakers. Sneakskin™ is an exclusive, superthin, flexible, durable and waterproof graphic film that can be applied to white, light coloured or metallic shoes. It’s also a temporary application that can be peeled off and changed as often as you like!