This cup actually freezes evenly and keeps the drink inside cold for hours.  The cup is a little heavy but easy to hold for young little hands.  I like to keep milk cold in this when we are going out.  My child does not mind that cup being cold, she drinks it and holds it just fine.  When it is upside down or fallen over it does not drip.  It is easy to take apart and cleans well.  It is very durable and will withstand being frozen again and again.  Fast and effective, I would recommend this cup to any parent.  Sometimes Costco has the four pack and… read full review »