The Butler Creek 70210 product is remarkable for its Blizzard scope covers. These covers showcase the unique Flip-Open design of Butler Creek, combined with silent, spring-loaded functionality. The clear windows on the covers ensure fast target acquisition, particularly in close to medium range settings.There are tabs on both sides of the lid, which can be comfortably managed by shooters, whether they are right or left handed. Optimum clarity and light transmission are achieved through the use of Blizzard lenses, crafted from high-grade optical polymers. This quality makes them the best see-thru cover available.In addition to these qualities, the Blizzard scope covers have been tested in extreme conditions, proving their reliability. They form a weather-resistant seal around both the objective and ocular lenses, ensuring protection and durability.