Flexible. Acer's Switch 12S is a 12.5-inch detachable equipped with a bright, contrasty display and optional pen input. The Switch costs 1200 Euro (~$1330) - way too much in our opinion.
http://www.notebookcheck.net/Acer-Aspire-Switch-12S-SW7-272-M3A0-Convertible-Review.168358.0.html