My daughter has burton snowboarding boots, how do i know if it is compatible with the thermic battery pack?It has the strings to tighten the boot, and i do not think it has a built in heater...how would i know?

The Burton boots that are pre-wired (or pre-linered if you prefer) have a little connector that sticks up at the tougue that says "Therm-ic" on it. You plug this into the battery packs to heat them up. Not sure if this list is all inclusive but I'm pretty sure these are the boot models that have it: SLX, Sapphire, Q and Supreme. Most any boot can be made to have this feature through the purchase of Therm-ic's line of Thermicsole footbeds. Backcountry.com does not carry them...but you can find them at alpineaccessories.com