Summit Viper SD Collars & Tags Its patented clamp securely locks

Its patented clamp securely locks down any weapon for a hands-free

Barometric altimeter

and rugged durability without sacrificing performance

Words from Mark Zepp - In 2008

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Summit Viper SD Collars & Tags Its patented clamp securely locksSummits standard Viper SD continues to be one of the most popular climbers ever for bowhunters and rifle hunters. Its large foot platform, adjustable plush seat, and available accessories provide versatility to fit any hunting style. With the Viper SD, all day sits are no problem. The seat and zippered armpads for this model come in Mossy Oak Country DNA. Learn about all of the Viper SDs features below, including Dead Metal Sound Deadening (SD)