The Trail design features a custom fitted Neoprene cover that protects your Trail series scope. Specifically designed to give you full operation of your thermal optic. Your cover will provide full functionality of your control buttons, focus turret, and an added vent hole allows the scope to be properly vented to keep your unit running. OPTI-SOC patented design also features a handwarmer pocket, designed to help keep your thermal warm on the coldest winter nights, increasing your battery life! Trail series are designed to fit any of the manufactured mounts currently available.