lid would open when twist to drink
April 18, 2014
when i twist the upper part of the lid to get the straw out for my son to drink, the bottom part would sometimes twist open as well. so i have to hold the bottom part to prevent spilling. i don't know if mine was a defect or it's just a poor design. however, the cup itself is very easy to clean, no complicated small parts like other cups i got for my son in the past.