Lotto-Men`s Viper Ultra Tennis Shoes Black and Red Warm-(888971005947) The first model of its kind, the Lotto Men`s Viper Ultra Tennis Shoe is perfect for players looking for a balance of comfort and durability during play. This stylish design features a K-PU upper providing lightweight breathability and support throughout the body of the shoe... Enerturn Cushioning | K-Pu Upper | Lightweight Size - (10.5) | Color - (Black) Authorized Lotto Dealer. All racquets are strung and ready for the courts! SEE SELLER DETAILS FOR RETURN POLICY.