Review (5/5): Well Worth the money
Definitely worth the money to whiten your teeth.
Pros:
Fast
Semi Convenient
Pain is not that bad
Cons:
Make you drool (Use cotton balls in your mouth to soak up all that saliva...)
Hard to stay on
I DO NOT recommend using while commuting, too annoying
Overall, a product worthy of my hard earned 20 dollars. Just a hint, do either top or bottom first (less yucky feeling)