I came up with the idea for the One Bottle Hydration System when I purchased the $15 Takeya/ThermoFlask bottles from Costco instead of the $55 version from Hydro Flask. Once I realized that I could 3D print an adapter for a 3/8" tube I put it on Etsy and the rest is history!If you've got a Takeya or Thermo-Flask with the flip-top lid there's no reason to buy another one! This set just has the 43" bite valve/tube/adapter assembly. It comes with a rotating clip for 1" and 3/4" webbing - you can upgrade to a magnetic clip for $5 and no extra shipping, and add a blue, grey, black, light brown, or dark brown tube cover!The standard blue TPU tube can be upgraded to a silicone tube for $11 if you're worried about plastic exposure, and you can add an accessory or tube cover (or the accessories combo pack) with no extra shipping charge!The combo pack includes a magnetic tube clip, a cleaning brush, and an extra plastic clip for $8, a 20% savings!Click below for more detail on the customizations!Silicone TubeFull-Length Insulating Tube CoverMagnetic Tube ClipUltralight Cleaning BrushQuick-Connect Adapter