Why are sails made out of canvas?

Sails are traditionally made from canvas because it is a durable, strong, and weather-resistant fabric that can withstand the forces of wind and water. Canvas provides Excellent tensile strength, allowing it to maintain shape and performance under tension. Additionally, it is relatively lightweight, making it easier to handle while still being robust enough for various sailing conditions. Modern sails may also use synthetic materials, but canvas remains a popular choice for its classic properties and ease of repair.