www.independent.co.uk/life-style/women/manspreading-chair-design-laila-laurel-award-brighton-university-a9008746.html
So a student designed a chair for men, it goes inward at the edges and has raised edges to force anyone sitting on it to sit with their legs closed otherwise it would be uncomfortable to sit on. She got an award for it and it's been posted all over the media as some groundbreaking idea.
I do however, wonder just how practical this is. If it's installed in public areas or public transport how can you ensure only men sit on it? What if for example the only seat left on a train is one of them and the last passenger to get on is a woman who then has to choose between standing or sitting on an uncomfortable chair? And of course any seats reserved for "men only" mean less seats for women.
btw if you were to flip the chair around and sit on it back-to-front, then you can sit any way you want.