It means calm and reserve to me, perhaps coupled with a careful observation of one's manners. It's not exactly a manner of dress or speech- more a way of behaving. Bashfulness and modesty doesn't bring anything but good.
The Rca frame and basic hardware weigh less than 1.5 pounds, keeping the bike's total built weight to about 10 pounds. Tour de France riders must add ballast to hit the race's 15-pound minimum. Drag consumes up to 50 percent of a racer's energy when he's in a pack, 90 percent when he's riding alone. The tubes of the Rca frame are teardrop-shaped in cross section, improving aerodynamics.
It looks and sounds like a dream bike. The ProForm TDF Pro 5.0 bears the sunny Le Tour de France logo and is the official training bike for the race. It has a serious 48.5-pound (22 kg.) flywheel and lets you customize its gear ratios. Its resistance system creates a good approximation of road biking and includes shifters on the handlebars.