Hydro flask thermo flask, water bottle car cup adapter 100 MM Opening.

cup holder will be printed in black unless otherwise requested by buyer. Different colors will require more time to ship since both cup holder or material might not be in stock.
Cup Holder size:
Bottom of cup adapter that goes into car cup holder cosole is 80mm(3.1 inch)
Top outside diameter is 105mm(4.13inch)
and  Top inside is 100mm(3.7inch)
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Take a look at my shop for different sized cup holders. if your size is not available feel free to reach out for a custom diameter cup holder.  ill only need the size of the bottom outside diameter of the cup holder and the size of the inside diameter that the water flask will fit into
Adapters are FDM 3d printed and will have visible layer lines from 3d printing but wont compromise function.