This is a Lululemon Sigg Purple and Blue Accents One Liter Water Bottle.
Here is one view of the bottle. You can also see the Sigg name on the lower right side.
Here is a close up view. It says Swiss made since 1908.
You can see the black screw top. The name Sigg is on the top.
It shows a white omega Lululemon symbol in the middle.
I love this bottle for it’s color and screw top. I’m pretty hard on these bottles though, they dent pretty easily.