The My first Quadro construction kit offers 12 different construction options and can be combined with all Quadro products Quadro has a 6year guarantee and can be used all year round indoors and outdoors Quadro is an extremely versatile construction system instead of buying something new you can easily rebuild Quadro holds a whole childhood which makes it more valuable than disposable toys that lose its appeal after a while Quadro tubes couplings plates and screws as well as keys are made exclusively from highdensity polyethylene (HDPE) and polypropylene (PP) Polypropylene is one of the most neutral plastics and contains only two elements carbon and hydrogen It is considered a safe nontoxic and environmentally friendly alternative to other plastics