Serge is a sturdy, durable fabric with a distinctive diagonal pattern woven into it. If you look closely at serge, you'll see tiny parallel lines running at an angle across the cloth, creating a textured surface that feels smooth but looks slightly ridged.

The fabric gets its strength from how it's woven: the threads cross over and under each other in a special pattern called a twill weave. This makes serge tougher than many other fabrics, which is why it's often used for uniforms, work clothes, and suits. Military uniforms, police uniforms, and school blazers are frequently made from serge because the fabric can withstand daily wear without falling apart.

Serge is usually made from wool, though sometimes cotton or synthetic fibers are used instead. The fabric holds its shape well and resists wrinkles, making it practical for clothing that needs to look neat all day. It's also relatively easy to clean and maintain, another reason why it's popular for uniforms and professional clothing.

When you hear someone mention a serge suit or serge jacket, they're talking about clothing made from this practical, long-lasting fabric.