Viper Sleeves: Hard Cores Inner Sleeves

Viper Sleeves Hard Cores inner sleeves are the perfect companion for players who double sleeve using Viper Snakeskins outer sleeves. Designed for perfect fit on all Standard Size trading cards up to 2.5 inches x 3.5 inches. Made from only the finest materials, there is no better protection for your collection. Harden your core with Viper Hard Cores!

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