Arena FEschenbach's 8 X 25 Arena F binocular has a practical fold up design, enabling it to fit into any ruck sack or pocket, it features: Brilliant, true colour image due to BaK4 prism and full multi coating. Extremely easy to handle due to compact form and anti slip rubber coating allowing the binocular to lie comfortably in the hand. Nitrogen filling prevents misting of the internal optics if the temperature fluctuates. Watertight housing Spectacle