Summer is just around the corner - cool trousers

With the terrible weather we're experiencing in the UK at the moment, you may feel that this post is a little too early, but summer will be here before we know it and that means unbearable trouser clinging to your thighs heat in the office where I work.  For the purposes of professional appearance, I have to wear trousers, shorts are not allowed and wow do things get uncomfortable.  So I've been thinking of ways to maintain appearances, but keep things a little cooler in the leg line.  Is it possible to install laptop cooling fans that can be sewn into trouser legs or pockets to allow the movement of air, or tubing woven through the legs that carrys coolant?  Its time to start thinking about this now, before the heat arrives!