LEUPOLD MARK 3HD 6-18×50 P5 SIDE FOCUS TMR Part # 180671

Place the spread of your Binos in the medium position for the width measurement. For length place the eye cups where you like them (up or down) and measure for total length. These covers stretch and can fit as long as you come reasonably close to measurements of the cover. If your binos are 6.25 long its always better to go up in size to a 6.5″ cover.  We also recommed leave your cover on during non use times.  This storage will allow the cover to form fit over time and break in to a better fit.