For the woman cyclist who is serious about her sport so she requires top level cycling apparel to enhance her performance by making her feel comfortable and fast then the Castelli Free Aero Race 4 Woman’s Bib-short is the best bib-short. Castelli chose the right combination of fabrics, put together with minimal seams in the right places, to create a race bib-short specifically for women. The combination creates bib-shorts that compress in the right places so the bib-short moves like a second skin. These bib-shorts also manage body moisture thanks to the types and location of fabrics. The fabrics maintain performance body temperature by keeping a hardworking female cyclist dry and cool. Besides keeping a cyclist dry, the soft Forza fabric with Lycra is very compressive. The compression supports working muscles by stimulating circulation to speed up recovery as a cyclist is pedaling. The bib straps are made with a soft and flat mesh fabric that stays dry. The leg gripper compresses without creating the sausage effect, another feature adding to comfort. Fit is perfected around the waist by a lumbar support band designed specifically for a woman’s body. Perhaps the most important detail when looking for long distance comfort is the seat pad. The Progetto X² Air Seamless Donna seat pad is Castelli’s long distance seat pad that has been used by professional racers. The Donna has been designed specifically for a woman’s anatomy. The seat pad is race specific which means its padding does not interfere with the pedal stroke and it stays dry during high-intensity racing. Viscous Comfort Inserts are added under the sit bones and perineal region which are the most sensitive areas. The seamless top layer has been made more stretchy and softer so it moves with the body and doesn’t chafe. The Free Aero Race 4 Woman’s Bib-short is Castelli’s best race bib-shorts.