I had never heard of Silipint prior to receiving a pint glass as a gift this past Christmas, but it ended up being one of my favorite gifts. I love it so much that I bought myself a travel lid and straws to go with it, and have since bought additional cups, lids and straws for my family at home. I never thought silicone drinkware would make such a big impression on my life, but I am in awe! I have been able to use my pint glass for everything I drink, from water to coffee (and I can even warm up my coffee in the microwave after I have wandered off and forgotten about it- though I will say, my coffee does tend to stay warmer for longer than if I had it in a regular mug). I love that once you get a good seal with the travel lid, which is not hard to do, it does not leak. The first day I got my lid, I made sure that the lid was properly sealed along the edges and the straw hole (and the drinking hole was closed) and then walked around my house with my cup completely upside-down- it didn't drip at all! The other thing I like about the travel lid is that it is very similar in design to your average disposable coffee lid (like you would find at Starbucks). A perfectly-sized opening that doesn't cause your beverage to gush into your mouth, and has a comfortable, nice-sized raised lip (for your lips). A note about the straws too; My daughter is a notorious straw chewer, and I'm honestly not sure how her teeth have survived the numerous cracked acrylic straws she's had over the years, but she is an incredibly happy camper with her new silistraws. They have survived several weeks of daily chewing thus far without any visible damage and it has been lovely to not worry about her teeth and say "honey, please stop chewing on your straw" every five minutes! I cannot wait for this summer when I don't have transfer my beverage into travel mugs or water bottles in order to drink them outside and avoid having a bug-filled beverage or accidentally knocking it over and spilling my drink everywhere when I'm hanging out on my lawn. I can just thrown on the travel lid and bring my already-being-used-silipint outside with me, worry-free!