No matter what the day has in store, our new Sierra binoculars keep foul weather out and deliver bright, crisp views with 100% waterproof, fog proof construction and premium multi-coated optics. Their rugged rubber armor protects against rough handling. An there's a model for every enthusiast - choose from two compact models and two full-size models all the way up to a 12x 50mm version for extended range and brightness.