The ION Bikeshorts Traze_Plus features a removable insert and is an exceptionally versatile pair of cycling shorts for trail and mountain biking. The material consists of polyester and is extremely breathable and robust. The insert provides optimal ventilation. Again, the insert is removable, so the cycling shorts can be worn by themselves depending on the weather. Ventilation holes on the inside legs allow for added air circulation and a comfortable temperature when cycling. The comfy waistband is adjustable, so it will fit comfortably to your body. In addition, there are reflective details for increased visibility and safety when cycling in the dark. The 2 zip pockets on the ION Bikeshorts Traze_Plus offer plenty of room for your mobile, keys and other small items.