DESC: The in-line design of the Wind River Cascades series 8x42mm and 10x42mm center focus roof prism binoculars gives you the sharp, bright image and full contrast you demand, even in low light. They're completely waterproof and built tough, with shock-absorbing rubber armor for extra protection. Long eye relief and soft, twist-up eyecups make the Cascades series easy to use with glasses as well.