The nature of pop-up shops means you never know where and when the city's hottest fashions will appear. TFH plays up that temporality at its new boutique, created inside Traffic Club, by using discarded materials like cardboard boxes and cardboard drums to display its stock of stylish t-shirts, handbags and hoodies. The wares of over 20 of Poland's young fashion designers can be found inside, including Rozwadowska Bags, Alicja Saar and Odio Tees, and the stock includes accessories and large pictorial books about - - what else? - - fashion.