Instant purchase is OK. ILLIT Korea Limited Pocari Sweat Purchase Benefit Postcard *Regarding the size, it's larger than a trading card, but smaller than a standard postcard. Please refer to image ③ for the back side. ************************ Due to being an overseas product, there may be initial scratches, scuffs, or stains. Please refrain from purchasing if you are seeking a perfect item. It will be shipped with reinforcement and waterproof measures.