Swim Straight is the world first in-goggle compass. You can use it to sight a heading in open water and then follow the compass to swim in that direction.
The most interesting thing about the Chirp Wheel is that it has a padded channel that protects your spine. The wheel also fits perfectly in between your shoulder blades.
There's nothing worse than getting to a race and discovering that you left an important piece of gear at home... Click here to download my packing checklist.