I found these bottles on Amazon while I was reading about Hydro Flask's review. These bottles look very similar to Hydro Flask's. The reviews are also high. When buying two, it's actually cheaper.
Two 32oz Simple Modern Summit Vacuum Insulated Stainless Steel Wide Mouth Water Bottle for $29.99 -> $15 each
Various color combinations to choose from
Combo deal: https://www.amazon.com/Simple-Mod...B0716X6CLZ
More reviews under the single bottle: