While they already fit like a second skin, the Free Aero Shorts go a step further and incorporate dimpled fabric at the outer panels to move air much like the surface texture of a golf ball. The seat and front panels are constructed from a breathable fabric so you won't overheat. Both fabrics are 30% Lycra, which lends a compressive quality to the fit to keep your legs rejuvenated. All the seams are flatlock stitched to minimize chafing. The bib shorts are held in place by Castelli Carre straps. This design features breathable mesh that culminates in Carre fabric in a yolk over your shoulders. This keeps the straps tight, yet comfortable, against your torso to avoid unnecessary wind stifling bulges. In subtle Italian style, the shorts feature Castelli red accents on the leg grippers, reflective squares on the rear of the legs and iconic scorpion logos.