An iaito is a type of Japanese sword specifically designed for iaido, a martial art focused on the art of drawing and striking with the sword. It is a practice sword that replicates the look and feel of a traditional katana, but with certain key differences.

The main purpose of an iaito is to provide a safe and effective training tool for iaido practitioners. Unlike functional or live-blade swords, iaito swords have a non-sharpened or blunt edge. The blade is typically made of aluminum alloy or zinc-aluminum alloy, which allows for repetitive and safe practice of iaido techniques without the risk of accidental cuts or injuries.

Iaito swords often closely resemble katana swords in terms of their overall appearance, weight, balance, and shape. They feature a curved, single-edged blade, a circular or squared guard (tsuba), and a hilt (tsuka) wrapped with traditional materials such as cotton or silk.

The use of an iaito in iaido training allows practitioners to focus on developing proper form, precision, and control in their sword movements without the inherent dangers associated with sharp blades. It enables them to practice drawing, striking, and sheathing techniques with realism and fluidity while maintaining a safe training environment.

It's important to note that iaito swords are specifically designed for iaido practice and are not suitable for cutting exercises, combat, or other purposes that require a sharpened blade. The non-sharpened edge and the use of materials like aluminum alloy make iaito swords less suitable for cutting objects effectively.