I bought the small FLEX Cup a couple of weeks ago when it was on sale. The one thing about silicone is that it collects lint like crazy, hence why there is some on the cup. I always wash cups before using them, and you should too. Anyway, here are my thoughts on the FLEX Cup. Disclaimer: All opinions are my own. Always consult your physician before trying out products like these and others. This is not a sponsored post.