Hi there,
Underground Steeze 2010 is definitely a wakestyle kiteboard. It goes upwind really good because it has a definitely harder flex.
It is a good choice for flat water but not so good on the waves. If you want to use it with bindings get the bigger one but if you're gonna use it with normal bootstraps you can get the 133cm.
check this:
http://www.surfpm.com/kitesurfing/kiteboards/Underground-kiteboard/Steeze-2010