3 in 1 travel system gb maris can be used with the carry cot44 with the matching gb idan infant car seat or with a comfortable seat unittop level compactness the gb maris travel system combines comfort and functionality with a compact footprint of just 54 cm made for the metropolisone hand easy fold the maris folds into a compact package using just one hand and is designed so it can stand alonefull lie flat recline function whether sitting or lying down44 the backrest and footrest of the