No more having to bump your heavily laden trolley backwards up steps our ingenious shopper has six cleverly designed articulated wheels that easily move the trolley up and down steps and stairs the simple foldout mechanism opens in secondsthe super lightweight design is easy to manoeuvre and very strong load capacity is a generous 30 litres enough for a good sized shopthe sturdy waterproof bag has a duffle style drawstring closure bag removes for unloading tough metal frame with comfort