You aren't stuck with the band that came with your Apple Watch. Both Apple and other companies make a variety of straps that you can swap in for a new look. To remove the band, take off the watch, and hold one of the oval-shaped clasps near where the strap attaches, and then slide it off in the opposite direction from the Digital Crown. Repeat these steps for the other side; the new band will slide into the slots until you hear a soft click.