Welcome to the Seido Online Store. T-shirts & More... T-shirts and sweatshirts. Women's Women's yoga tops, fleeces, and more. Karate Uniforms For adults and kids. Books All the essentials. Fight Gear Everything you need for kumite. Videos Instructional material & events. © 2005 World Seido Karate Organization. 61 W 23rd Street, New York, New York, 10010. (212)924-0511 / Fax (212)691-0343