Koreans traditionally used mosi, a lightweight and breathable ramie fabric, to maintain cool body temperatures during the summer [1].

This practice highlights a cultural reliance on textile science to manage extreme humidity and heat before the widespread adoption of air conditioning. By utilizing natural fibers, the tradition demonstrates an early approach to sustainable climate adaptation within the region.

Mosi is derived from the ramie plant and is prized for its unique physical properties. The fabric is specifically designed to be breathable, allowing air to circulate freely across the skin [1]. This effect is often described as wearing the breeze, providing a cooling sensation that is essential for enduring the stifling conditions of a Korean summer [1].

Historically, these garments served as the primary defense against the heat for various social classes. The weaving process creates a textile that is both durable and light, qualities that make it ideal for the high humidity levels found in the peninsula [1]. While modern technology has introduced electronic cooling, the cultural significance of mosi remains a testament to traditional Korean ingenuity.

The use of ramie represents a intersection of agriculture and fashion. The plant must be processed carefully to create the fine threads required for high-quality mosi [1]. This labor-intensive process ensured that the resulting clothing could maximize ventilation without sacrificing the structure of the garment.

As urban centers in Korea have grown and air conditioning has become standard, the daily necessity of mosi has shifted. However, the fabric continues to be recognized for its ability to mitigate heat through natural means [1].

Mosi is a lightweight and breathable ramie fabric used to maintain cool body temperatures.

The continued recognition of mosi fabric underscores a shift from necessary survival tools to cultural heritage. As global temperatures rise, there is an increasing interest in traditional, low-energy cooling methods that reduce reliance on electricity-heavy air conditioning systems.