“I got one of the steel cups when I ordered a large amount of drops, and really like the way it feels in my hand. But I wanted a lid so I could take it outside or in the car. The sip lid fits it exactly, and I love that it's dishwasher safe. I feared that it would spill out of the drinking hole because there's no way to seal it off, but haven't had a problem at all when going over bumps in the car. If you have the steel cup, you'll like having the sip lid.”
“This is a necessary addition to the steel cup. I enjoy using this combo when relaxing outside on my deck. It keeps the flying critters out of my drink!”