Water doesn't drain fully if stacked before being dry
Ease of use
Security / Hygiene
Quality / Performance
My children have had these since babies and my 3yr old still plays with these.
Great for stacking and learning motor skills.
Each cup is a different colour, with a different number of holes and a different shape on the bottom, so play has evolved to chat about these things, and help with colour/ shape/ number recognition.
Our boy has loved these since he was 3 months old and is now 1 year old. He loves the different colours and filling them up to watch the water pour out the bottom. He even tried to use them as a cup and drink from them! They are hygienic and sturdy plastic so i do not need to worry about them cracking when he chews them, he will be playing with these for a long time and i have even bought more to put in the paddling pool outside! The only thing is they do sometimes get some water build up but this doesnt happen often!