Review (2/5): No "+" valve in cap -- makes all the difference
I have had silicone travel bottles in the past and was hoping these would be equivalent. But these don't have that little burping + cut seal in the cap that prevents the contents from flowing out unless the bottle is squeezed.
And flow out it does. If you stand the bottle on its cap, the contents will start to run out as soon as you open the cap. If you leave them cap-up, then you have to open the cap, invert the bottle, and wait ... and wait ... for the contents to flow to the cap.
Nope. Didn't like these at all. I found some others that have that burp seal. I'll scrap these when those arrive.