Celestron outland x binocular 10x42 is rubber covered to allow for tough outdoor handling they are waterproof and fogproof and nitrogen purged to enable use in all weather conditions with large focus knobs and twist up eyecups they make for quick adjustment of eye relief to obtain the full field of view features multi coated optics waterproof and fogproof protective rubber covering twist up eyecups for quick adjustment wide binocular strap moisture resistant neoprene carrying