I recently found these at Costco (2 for $20) and I'm seriously obsessed! I wish I had found these during my first trimester when I had morning sickness! They're great because they have straws (a must-have for me when I'm feeling sick), they don't "sweat" (aka condensation), and they insulate really well! I've only used them for cold drinks so far, but I'll fill it with ice and water in the evening and there will still be ice cubes the next morning! They have the 30oz cups on Amazon for around $26 if you don't have a Costco near you. I highly recommend to everyone!