The Enhanced Combat Helmet (ECH) is the standard combat helmet of the Australian Defence Force, introduced in 2004 to replace the PASGT helmet. A modified version of the 'RBH303' design offered by the Israeli company Rabintex, it was selected in a competition between four rival designs. Modifications to the helmet include making it lighter, better ballistics protection qualities, and a redesign of the liner's padding. The Enhanced Combat Helmet has four sizes (small, medium, large and extra large).