This bottle holder fits most 1.5l amazon bottles.
These are the one that i use: Mighty Peaks Water Bottle with Fruit Strainer – Lightweight, Stable – Suitable for Carbonated Drinks – BPA Free Plastic – 350 ml 500 ml 650 ml 1 L 1.5 L 2 L – Water Bottle for Fitness, Outdoor Bicycle Children Leak-Proof : Amazon.de: Sports & Outdoors
I printed mine in PETG and with support at least for the upper half, you might be able to print the upper half without support but it is very wiggly without them so print slow if needed.
I used mine on mountainbike trails and it didn't broke.
So have fun printing and riding :)
The author remixed this model.
I made the strong version a bit stronger and bigger to fit bigger bottles