of these bicycles is ('grandma bike'), a term which has been in use since the 1970s. The is a national icon, and is even used by men in the Netherlands; this is why some people refer to bicycles of this design as Dutch bikes. The classic is still in production in the Netherlands and has changed little since 1911: it comes with a single-speed gear, (ISO 635) wheels, black painted frame and mudguards (with white-blazoning at the back of the rear one), and a rear skirt guard. Modern variants, be they painted in other colours, with aluminium frames, drum-brakes or multiple gear ratios in a hub gearing system, will all conform to the same basic look and dimensions as the classic . The Dutch gentlemen's equivalent is called the ('grandpa bike') or ('city bike') and generally has the same characteristics but with a "diamond" or "gents'" frame, thereby much the same as the gentleman's roadster in England and elsewhere. Sports roadster A variation on this type of bicycle is the sports roadster (also known as the "light roadster"), which typically has a lighter frame, and a slightly steeper seat-tube and head-tube angle of about 70°–72°, fitted with cable brakes, comfortable "flat" North Road handlebars, mudguards and, as often as not, three, four or five-speed internal hub gears. Sports or light roadsters were fitted with (ISO 590) traditional English size wheels with Endrick rims, hence a lower bottom bracket and correspondingly lower stand-over height and weighing around . It was these bikes that were dubbed "English racers" in the United States. Club sports Club sports, or semi-racer, bicycles were the high-performance machines of their time and place, named so as they were the style of bicycle popular with members of the many active cycling clubs. A club bicycle would typically have Reynolds 531 frame tubing, a narrow, unsprung leather saddle, inverted North Road handlebars (or drop bars), steel "rat trap" pedals with toe clips, 5-15 speed derailleur gearing, alloy rims and light high-pressure (ISO 597) or (ISO 630) tires. Some club bicycles would be likely to have a more exotic Sturmey-Archer hub, perhaps, a medium- or close-ratio model, 3 or 4 speed, with a very few even being equipped with the rare ASC three-speed fixed-gear hub. Many club bicycles were single-speed machines, usually with a reversible hub: single-speed freewheel on one side, fixed-gear on the other. Derailers began to be used