Arena has launched a somewhat skimpier competition brief, named Savatis.
It's side width is stated 3.5 cm (1 3/8"). Available in white, black, red, sevaral shades of blue / teal, and *pink*.
Currently it is offered in selected markets only: the Mediterranean and Eastern Europe (including Russia).
Best way to view is in this Italian Ebay shop:
http://stores.ebay.it/masternuotoshoponline/
Type Savatis in the small search box top left and click "Cerca".
Perhaps the start of a trend?