Mickey Thompson Sportsman tire stack. Soda Bottle coozies. Smaller size fits 16.9oz bottles and larger fits the 24oz version. Designed for limited bottle contact and limited outside surface contact with inside for enhanced insulating properties. Prints in PLA without supports...minimal infill suggested about 10% and using Lightening fill to reduce heat transfer points. Has open grid bottom to drain any condensation and support the petaloid bottle configuration and prevent spinning while opening or closing bottle. Cannot guarantee it fits your local bottlers designs but the larger ID is 2.875" and the smaller ID is 2.55" for lightly snug fit. I printed mine orange for easy sighting in the shop but looks good in dark grey or black. The STL image here does not look like the tire pattern...see the 3d view and images for actual appearance.