The ArcticFusion Tube Kit uses a 6mm / 1/4in drinking tube and HydraPak Plug-N-Play connection. Check that your reservoir uses a compatible Plug-N-Play connection before replacing or upgrading the existing hose.
The 91.4cm / 36in tube provides sufficient length for routing from a rear reservoir towards the shoulder strap area of a compatible running pack.
For hot-weather insulation rather than protection from freezing temperatures, the HydraPak HydraFusion Tube is the alternative designed to help keep water cooler in the heat.