http://www.4sevens.com/index.php?cPath=297_446&osCsid=2ade495b5e35d0d1a92999c069f5f767 for the Whistle, titanium, won't break if say you fall, like on a plastic one.
http://www.ems.com/product/index.jsp?productId=3659209&cp=3677338.11359845.3905147 Collapsible trekking poles, these get high...