The Mavic Ksyrium Pro Men's Bib Shorts are the bibs you'll be after once you've graduated from a high chair to high ambitions in the saddle. They're built to offer serious compressive support for your muscles, so you don't get unduly exhausted on grueling century-plus days, and they also keep you cool and provide comfortable and ergonomic cushion between you and the road noise filtering up through the seatpost. Little differences matter over long distances. The panels of the Ksyrium, all of which are made from Skin Matrix ST fabric, are sewn with flatlock seams and aligned to provide ergonomic support while decreasing irritation when you're moving in the saddle. The fabric itself is compressive and highly breathable, so you don't get worn down from muscle vibration or turn into a sweaty mess under the hot mountain sun, and then open mesh bibs increase cool, life-giving airflow. The Ergo 3D Pro Endurance chamois might be the most important part of the entire package. It's made from dual-density Ortholite memory foam--which feels even more plush than it sounds--and increases shock absorption by up to 20% over standard inserts. The foam also changes shape as you move, so you'll be completely support whether you're gearing up for a climb or just out for a long, moderate double century. You know, an easy day.