A "ruggers" T-shirt typically refers to a rugby shirt or a T-shirt designed to resemble a rugby shirt. Here's what that generally entails:

• Design: Rugby shirts traditionally feature a heavy cotton fabric, a buttoned placket (often with rubber buttons), and a collar. A ruggers T-shirt often mimics this design in a lighter-weight T-shirt material, like cotton or a cotton blend.
• Stripes or Blocks of Color: Rugby shirts are commonly known for their bold horizontal stripes or blocks of color. Ruggers T-shirts often incorporate these patterns.
• Casual Wear: While traditional rugby shirts are worn for the sport, ruggers T-shirts are designed for casual wear, offering a sporty and relaxed look.

In short, it's a T-shirt that borrows the style and aesthetic of a rugby shirt but is made in a lighter, more casual T-shirt format.