Thank you for viewing. This is a handmade item by an amateur. Please refrain from purchasing if you are looking for a perfect product or are overly sensitive to imperfections. The shaker size is approximately 4.5cm in length, 5cm in width, and 1cm in height. It contains oil and sand. It has a beautiful blue and light blue gradation. The back has a faint ocean-like paint. There may be fine dust or air bubbles, but please understand that this is a handmade item before purchasing. Yu-packet Post mini