Not really being familiar with what sippy cups were, I was in for a surprise.  I'd heard that they were spill proof, however I was a bit skeptical.  But after keeping my two year old niece I became familiar with the "sippy cup" and found that they really were spill proof. My two year old niece laid the cup on the sofa filled with her favorite drink.  After the cup laid on the couch for a few minutes and she picked it up, I noticed that the couch was still dry.  I am now a believer. — The cup was easy to assemble, disassemble and clean. … read full review »