Kinnikuman’s Robin Mask Visor Becomes a Durable Metal Bag Clip

Robin Mask, the refined warrior from the Kinnikuman saga, is known for many things: his noble demeanor, his unyielding spirit, and of course, his iconic mask visor. That visor has now been reimagined as a practical everyday item—a sturdy metal bag closer from precision casting maker Castem.

Dubbed the “Robin Mask Bag Closer,” this product is inspired by the visor’s unmistakable silhouette. It’s designed to securely seal bread bags, snack packages, and other similar pouches, keeping contents fresh with a firm, reliable grip.

For those unfamiliar with the franchise, Kinnikuman began serialization in Shueisha’s Weekly Shonen Jump in 1979, created by the duo yudetamago (story by Shimada Takashi and art by Nakai Yoshinori). The series has since become a cultural phenomenon, with over 85 million copies in print and a massive anime adaptation history. The latest anime, “Kinnikuman: Perfect Origin Arc,” aired Season 1 from July to September 2024 and Season 2 from January to March 2025. A Season 3 has also been announced.

The bag closer is crafted from spring steel, a material that can be bent easily by hand yet returns to its original shape after repeated use. Unlike typical plastic bag clips, this metal version is built to last, offering an eco-friendly alternative for long-term use.

But the Robin Mask Bag Closer isn’t just for food preservation. Its versatile design makes it useful for wrangling charging cables, marking umbrellas, or even serving as a unique accessory charm. It’s a small but delightful way to bring a touch of superhero power into daily life.

The Robin Mask Bag Closer is priced at 1,100 yen (tax included) and will go on sale starting September 18, 2026, at 10:00 AM JST—coinciding with Robin Mask’s birthday. It will be available at Castem’s Rakuten Market store and the “meta mate 誠品生活日本橋店” in Tokyo, among other retailers.

Here are the product specifications: