The Hincapie Fission Bib Short is designed for riding in the heat of the summer. The Fission combines supportive, slightly compressive main body fabric with an easy breathing bib upper and a seamless, variable density chamois to keep your summer rides as comfortable as they can be. The Fission Bib Short is built from AT2 Tour Lycra, which yields a compressive fit. By enveloping your legs in a snug embrace, these shorts reduce damaging muscle vibrations, which is key to preventing road chatter induced fatigue. Naturally, it's a wicking material, which pulls moisture away from your skin, allowing it to evaporate at the surface, thereby keeping you dry. The bibs are built from a lightweight Diamond Mesh, so as to be unrestrictive and cool. Silicone grippers keep these shorts from riding up. The insert is Hincapie's Pro chamois, which features a center channel to relieve pressure. Pressure is further relieved by the multiple density foam, which helps to evenly distribute your body's weight, thereby avoiding hotspots. The insert's seamless construction minimizes the possibility of chafing. For the chamois, you'll be resting on Hincapie's Pro Chamois. Comprised of a variable density, perforated foam, the Pro insert supports the regions that need it most, without impacting the ones that don't. So, the focus has been placed at the perineal, ischial, and gluteal areas the points most prone to distress from saddle pressure and compression. To account for hotspots and abrasion, the Pro uses a seamless construction to create an abrasion free support structure. And at the center of the insert, Hincapie has placed a center relief channel that promotes increased circulation by protecting nerves like the pudendal the primary source of numbness when compressed.