It's a strap for holding water bottle cap attached to the bottle. To be printed out of flexible material.
▷ fix nalgene strap 3d models 【 STLFinder 】
Narrow Mouth Nalgene Cap Tether by Inspector5, Download free STL model
▷ nalgene bottle cap 3d models 【 STLFinder 】
▷ nalgene bottle cap 3d models 【 STLFinder 】
nalgene lid 3D Models to Print - yeggi
▷ nalgene bottle cap 3d models 【 STLFinder 】
Nalgene 1L bottle cap strap repair by Open Hardware Designs, Download free STL model
nalgene lid 3D Models to Print - yeggi
Aquaflask cap repair set by Robert Schiele, Download free STL model
Nalgene best 3D printer models・23 designs to download・Cults
Nalgene 1L bottle cap strap repair by Open Hardware Designs, Download free STL model
nalgene lid 3D Models to Print - yeggi