Cartamodello base:
http://www.dana-made-it.com/2008/07/tutorial-kid-pants-with-flat-front.html
Cartamodello tasche
http://www.scribd.com/doc/58520187/Convertible-Cargo-Pants-Pockets-Pattern-AesthetiNest
Tutorial:
http://www.aestheticnest.com/2011/06/sewing-convertible-cargo-pants-for-kids.html