To make sure you have the proper fit for your binoculars, the ATB 10x36s have multi-setting click stop eyecups that ensure you will not have an uncomfortable viewing, even if you wear eyeglasses. The phase-correction coated high index prisms and precision alligned optics make it so that you will not strain your eyes during long lookouts. These binoculars are nitrogen filled and O-ring sealed, which means that they are protected from water and fog. These binoculars have been manufactured with Eco-Glass, which means that they are lead and arsenic free. The Nikon Monarch ATB 10x36 binoculars come with travel case, binocular strap and lens covers.