Fighter Design is an up and coming company bringing some very cool new ideas to the tactical market. Their Airflow pants in particular have the most aggressive hot weather design I've seen to date where you'll have to get into space suit type designs to do much better. No wacky fans, gels, or anything like that, just well placed mesh on an already good set of military style pants. Additionally the pants can utilize another cool product from Fighter Design, their Magnetic Fastener kits. For folks where velcro just doesn't match your needs, the magnetic closures offer a silent and smooth alternative.