ThermoWorks Thermapen Mk4 Boot.
The ThermoWorks Thermapen Mk4 Boot is a translucent silicone sleeve made only for the Thermapen Mk4, cushioning drops onto concrete or hard surfaces and shielding the thermometer from radiant heat near a grill or smoker. It glows in the dark, carries a magnetic back, and still fits the Zipper Wallet, Leather Wallet, and wall bracket.



Drop it on concrete.
Not the probe underneath.
ThermoWorks Thermapen Mk4 Boot protection
A Thermapen gets dropped, set down on a hot grate, and carried in an apron pocket more than any other tool at a cookout, and the Mk4 Boot is built around those three moments. The boot is made only for the Thermapen Mk4 and does not fit older Thermapen models, so the fit is snug rather than loose, and it still slides into the Zipper Wallet, Leather Wallet, or wall bracket without needing to come off first. ThermoWorks lists the Thermapen Mk4 as a discontinued model that used AAA batteries, so this boot is for cooks who already own one and want to keep it working rather than replacing it.
ThermoWorks states on its own site that it has been making temperature instruments since 1997, which is most of why the fit on an accessory like this one is precise instead of generic.
| Brand | ThermoWorks |
|---|---|
| Fits | Thermapen Mk4 only, not older models |
| Material | Translucent silicone, glows in the dark |
| Back | Magnetic, includes lanyard |
| Compatible with | Zipper Wallet, Leather Wallet, wall bracket |
| Availability | In our catalog, available to order |
