While our binoculars are built to be as rugged as possible, they are quite complex instruments. Always use a neck-strap to prevent accidental drops. When traveling, it’s best to fully retract the focuser (eyepieces as close as possible to the binocular body) to prevent damage to the focuser and/or ocular arms, should the eyepiece end of the binocular suffer an impact. Avoid dirt and sand as much as possible. If the lenses become dirty, we recommend using a Lens Cleaning Pen. First use the retractable soft brush to knock away any debris, then the cleaning tip can be used to remove anything remaining on the lens surfaces.