I have created my original arm belts for Kaatsu training. They are wider (3cm) than the beginner's version, so they provide a more secure squeeze. Usable range: arm circumference approximately 27cm to 43cm. * Please be careful not to over-tighten. * The color is the one in the first and second images (red). * These are handmade original belts, so please understand. * Free shipping (Yu-Packet Post Mini).