TAMANIWA

Unlike TAMANIWA’s own original brands, this is an official licensed line developed under a formal licensing agreement with MLB. Rather than simply offering standard uniforms and team caps, it interprets items such as bags, socks, and hats positioned between baseball culture and fashion through TAMANIWA’s distinctive perspective. While POTEN, ROSTER SOX, and INFIELDER DESIGN are developed as specialist brands originating from TAMANIWA, MLB is a project line that connects with baseball culture beyond the company through official licensing and expands its product range. It also offers collaborative products with INFIELDER DESIGN and ROSTER SOX, serving as a point of connection between the brand group and MLB.

Within TAMANIWA’s group of original brands, this is the core line specializing in socks. The name ROSTER derives from the baseball term for a player’s place on the first-team roster. Centered on sports socks made in Japan using functional materials, the line offers products that also incorporate design elements. It includes patterns and graphics that are easy to incorporate into everyday outfits, and serves not only a practical purpose but also introduces elements of baseball and American sports through footwear. Whereas POTEN specializes in caps and INFIELDER DESIGN spans multiple categories, ROSTER SOX focuses functionality and design on socks. It is also the parent brand that extends its aesthetic to the offshoot brand ROSTER BEAR.

A cross-category line within TAMANIWA’s original brand group, launched from Spring/Summer 2013. Its name comes from the baseball term “infielder.” While rooted in baseball, it takes subjects that interest the designer and translates them into caps, bags, knitwear, apparel, and other items. Whereas POTEN specializes in baseball caps and ROSTER SOX in sports socks, INFIELDER DESIGN is not limited to a particular product category and adds distinctive graphics and twists to accessories and apparel suited to everyday use. It also develops products in collaboration with MLB and serves as a core brand expressing TAMANIWA’s baseball-derived sensibility broadly.

Within TAMANIWA’s original brand group, a specialist line focused on baseball caps. It launched for Spring/Summer 2016 and is characterized by production at a factory specializing in making caps for professional and amateur baseball players. It emphasizes details, fit, and silhouette, and offers caps designed for long-term wear rather than relying solely on trends. While INFIELDER DESIGN handles a wide range of accessories and apparel rooted in baseball, and ROSTER SOX focuses on the functionality of socks, POTEN concentrates on the construction and wearing comfort of hats, making it the line that most clearly expresses TAMANIWA’s baseball-derived expertise.

An original line derived from ROSTER SOX, TAMANIWA’s sock brand. It developed from the parent brand’s sock-focused offering and produces apparel such as T-shirts and sweat shorts featuring an iconic bear motif, an American sports feel, and a playful character. While ROSTER SOX focuses on designing sports socks made in Japan and using functional materials, ROSTER BEAR extends the parent brand’s world into clothing through character and graphics. Unlike POTEN, which specializes in hats, and INFIELDER DESIGN, which develops products across categories, it is positioned as a derivative line that expands into apparel from ROSTER SOX.