Celestron Outland X Binocular - 10x25 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 Case - No Fault Lifetime Warranty