Cufflinks are worn by sliding them through the holes in the cuffs of a dress shirt. The decorative part of the cufflink should be facing outward, and the fastening mechanism should be on the inside of the cuff.

Cufflinks are considered a symbol of sophistication and elegance. They are often worn on formal occasions and can represent attention to detail, good taste, and a sense of style in a person's personality.

Whale back cufflinks are a type of cufflink that has a flat, solid piece on one end and a larger, rounded piece on the other end. The larger piece is called the "whale tail" and flips back to secure the cufflink in place.

The choice between round or square cufflinks is largely a matter of personal preference and the overall style of the dress shirt being worn. Round cufflinks are generally seen as more traditional, while square cufflinks can be seen as contemporary designs. Ultimately, it's up to the individual to decide which style they prefer.