Opinions???

I have heard these little beauties are supposed to tone you up while you walk. I walk a LOT for school(when it's in session) and wear tennis shoes EVERY day. I think these are totally cute but are they worth the $100-150? If you have these or personally know someone that does let me know what you/they think. Thanks!

I like these silver ones....

((I'm pretty sure Sarah just threw up in her mouth. She has no appreciation for metallics!))