Pearl Izumi indoor bib shorts. I bought and wore these once, but I'm selling them because I'm quitting road biking! Ventilation Bib Pants The "Ventilation Bib Pants," developed for indoor bikes, use the new, ultra-thick "3D-Mega II" pad with updated softness and fit, reducing the burden on the buttocks during long indoor bike rides. Mesh material is used on the entire area from the waist to the thighs to ensure coolness. A mesh pocket is included on the waist for carrying small items such as energy gels while riding. The hems have eliminated the anti-slip feature for a less constricting fit. Type: Bib shorts Gender: Men's