Alpens 10x42 Shasta Ridge 391-G1SR premium performance Binoculars are completely waterproof, fully multicoated and provide long eye relief. They also feature BAK4 optics that allow hunters, boaters, bird watchers, shooters, and outdoor woodsmen optimal viewing under any weather condition. Alpen Binoculars are full size models that have a sleek roof prism design while the compact models are porro prism design. Both designs provide the performance required by the most dedicated sports optics users. And, they feature the Alpen lifetime warranty. Shasta Ridge binoculars meet the extreme all weather needs of today"s active adventurers. When your goal is top performance and great value, the Alpen Shasta Ridge 391-G1SR is an excellent choice. BAK4 optics for clear, bright, high resolution images. PXA phase coating for superior resolution and color fidelity (roof prism models). Fully multi-coated optics for maximum brightness. Waterproof and nitrogen filled. Long eye relief for full field of view for eyeglass wearers. Twist lock eye cups. Stylish ergonomic design. Rubber armoring for protection and durability. Soft rubber rain guards (roof prism models). Durable carrying case. Premium quality neck strap