We understand that during a triathlon, you're traveling light. That's why the Louis Garneau Speed Bolero is ideal for a race where the sun refuses to shine. The Speed Bolero protects the portions of your body that get drilled by wind in the TT position, and leaves the rest to providence. Lightweight and far from bulky, slip on the Bolero and reap the benefits of speed. Louis Garneau made its Speed Bolero from the Aero Tech fabric -- a derivative of the compressive Lycra Power. Designed to fit in a true-to-form Bolero style, the Speed Bolero keeps the arms and shoulders covered and protected from the detrimental effects of the sun. To achieve this, Louis Garneau has given the piece a UPF/SPF 50 protective treatment. That's all great, but the question remains -- why would you wear it? The answer is simple. The Speed Bolero has been tunnel-tested to enhance its aerodynamic properties. Additionally, it wicks sweat away from the skin for a dry riding experience, but most importantly, the Bolero has compressive qualities. This means that the snug-fit of the top assists proper blood flow, and thus reduces the buildup of lactic acids. Garneau even claims that athletes using Lycra Power designs encounter a 12% increase in power. The Louis Garneau Speed Bolero is available in the color White and in four sizes from X-Small to Large.