The Pokemon Center Lillie's Drum Bag

a stylish mini shoulder bag designed to replicate the distinctive drum-shaped bag carried by the character Lillie from the Pokémon Sun & Moon series. 
Here are the key details based on available information:
Design: It is a yellow-colored drum-style bag, designed as a small shoulder/messenger bag for carrying personal items, such as phones, wallets, or, in the context of the anime, a "Nebby" (Cosmog) figure.
Dimensions: It typically measures approximately 22x14x19 cm (H x W x D).
Availability: This item is an official Pokemon Center Japan limited product. It has been re-released multiple times and is popular on export sites like Meccha-Japan and eBay.
Materials: It is generally made of materials like Polyester, PVC, and zinc alloy.
Authenticity: Authentic items are listed as "Pokemon Center Original" and often include tags.