All of the following pairs of goods are complements except
Herschel Supply Co. is a design-driven manufacturer of the finest quality backpacks, bags, travel goods and accessories. Free Shipping and 24/7 Customer Service in NA, EU, UK and AUS. Trading a trend following system on a single market or only a few different markets is suicidal. There may be long periods, even years, where there simply are no trends in any given market or asset class.