The 2013 Cool Classics series featured cards with a silver background behind the vehicle, showcasing the Custom Otto artwork in either blue or red. Interestingly, all models came with both Custom Otto color variants on the card.

Each car in the Cool Classics series boasts a durable metal base, ensuring both authenticity and durability. The defining feature of these models is their Spectrafrost colors, which add a vibrant and shimmering aesthetic to each vehicle. Additionally, Retro Slot Wheels adorn these cars, adding to their vintage charm and appeal.