The cup we really like ... Locate the screws apart, clean and screw back together is just ... The quality is good, beautiful colors ... It's spill-proof and our 8 months old son may very well drink from .. . He wanted namely always necessarily have a proper cup and drank rather bad from other sipper bottles ... It's just not a bottle-fed baby because it is line still breastfed ... I'm very happy to have found this cup and can him only recommend ...