The butterfly shape bowtie is the most classic shape (in this case 7cm width) giving a traditional bow tie shape when its tied. This handmade black bowtie is in a textured 100% silk twill and is handmade in England and adustable to any neck size from 14inch to 17 3/4. That's 36cm to 45cm. Perfect for black tie events where youre required to wear a tuxedo, or maybe you just want to!