Thermophore MaxHEAT Plus Moist Heat Pack — Petite 4" × 17" (Model 377)
The petite Thermophore with the Moisture-Plus cover — targeted moist heat for localized areas in any climate. 4" × 17" strip for neck, shoulder, hip, and small joints. Weighted 2 lbs, 3 heat settings up to 165°F, 25-minute auto shutoff. The Moisture-Plus cover lets you add a moist cloth in dry or heavily air-conditioned environments. Drug-free pain relief since 1931.
Great if you want to do a localized area on the body — neck, shoulder, hip. Love it!!!
Our Take: The MaxHEAT Plus 377 is the petite Thermophore with the Moisture-Plus cover — a versatile small-format pad for any environment. At 4" × 17" it wraps around the neck, drapes across the jaw for TMJ relief, covers the sinuses, or wraps a single joint. The Moisture-Plus cover produces automatic moist heat in most homes and also lets you add a damp cloth in dry or heavily air-conditioned environments. It has the same 3 heat settings, 25-minute auto shutoff, and 2 lb weighted construction as the standard MaxHEAT 177. If you want petite size with USA assembly, consider the Liberty 177.
Why You'd Choose the MaxHEAT Plus 377
- Produces automatic moist heat from ambient humidity. In dry or heavily air-conditioned environments, add a moist cloth inside the cover for supplemental moisture. It is the most versatile petite Thermophore cover option.
- The narrow strip wraps the neck, drapes across the jaw for TMJ relief, covers the sinuses, or wraps an elbow, knee, ankle, hip, or wrist. It is much more targeted than medium or large pads.
- Three temperature levels with a hands-free switch. Start on Low for more sensitive areas like the jaw or sinuses, then move to Medium or High as needed. Stays on until the 25-minute auto shutoff.
- Reaches 150–165°F, which is hotter than many drugstore heating pads that often top out around 120–140°F. Designed for deep therapeutic moist heat in a compact format.
- At 2 pounds the petite pad maintains good contact on curved areas like the neck, jaw, or joints. Helps the heat stay where you want it without constant repositioning.
- Supports typical heat therapy intervals and helps reduce risk from extended use. Many users treat for 15–20 minutes at a time.
- The fleece cover absorbs humidity from the air and the pad's heat converts it to therapeutic steam. In dry environments, the Moisture-Plus cover lets you add a moist cloth for extra moisture.
- The MaxHEAT Plus 377 qualifies for HSA and FSA purchases and may be reimbursable through Medicare or insurance when prescribed for arthritis pain management.
Tip: Tab to a reason. Press Enter or Space to toggle details. Press Escape to close.
Perfect For
- Neck pain, cervical tension, and stiffness
- TMJ or jaw pain and sinus pressure
- Localized shoulder and hip relief
- Small joints including elbow, knee, ankle, and wrist
- People in dry climates or heavily air-conditioned spaces who want a petite pad
You May Prefer a Different Model If…
- You do not need the Moisture-Plus cover → MaxHEAT 177.
- You want USA assembly in a petite pad → Liberty 177.
- You need wider coverage for the neck and both shoulders → MaxHEAT Neck & Shoulders.
- You need a medium pad for a fuller shoulder or abdomen area → MaxHEAT Plus 356.
MaxHEAT Plus 377 — Specifications
| Specification | Detail |
|---|---|
| Model | MaxHEAT Plus 377 |
| Line | MaxHEAT Plus |
| Size | 4" × 17" (Petite) |
| Best for | Neck, jaw (TMJ), sinuses, shoulder, hip, elbow, knee, ankle |
| Weight | 2 lbs |
| Max temperature | 150–165°F |
| Heat settings | 3 (Low / Medium / High) |
| Auto shutoff | 25 minutes |
| Moist heat | Automatic plus Moisture-Plus cover with cloth for dry environments |
| Cover | Moisture-Plus fleece, removable and machine washable |
| Cord length | 10 feet |
| HSA / FSA eligible | Yes |
| Medicare approved | Yes, when prescribed for arthritis |
| Warranty | 2 years |
| Brand | Battle Creek Equipment Company (est. 1931) |
Petite Pad Comparison — Which Is Right?
Four petite Thermophore options for neck, jaw, and small joints. Cover, switch, and assembly differ.
| Feature | MH Plus 377 ★ | MaxHEAT 177 | Liberty 177 | Liberty 077 |
|---|---|---|---|---|
| Size | 4" × 17" | 4" × 17" | 4" × 17" | 4" × 17" |
| Cover type | Moisture-Plus + cloth | Standard fleece | Standard fleece | Standard fleece |
| Switch type | 3-setting (Low/Med/High) | 3-setting (Low/Med/High) | 3-setting (Low/Med/High) | Press & hold (manual) |
| Max temp | 150–165°F | Up to 150°F | Up to 150°F | 150–165°F |
| Weight | 2 lbs | 2 lbs | 2 lbs | Weighted |
| Assembled in | China | China | USA | USA |
| Price | $68.79 | $55.99 | $57.99 | $55.99 |
| Shop | ★ This Product | Shop MaxHEAT 177 → | Shop Liberty 177 → | Shop Liberty 077 → |
All petite models are 4" × 17", weighted, produce automatic moist heat, include a 10-foot cord, carry a 2-year warranty, and are HSA/FSA eligible. Prices may vary.
Frequently Asked Questions
What is the difference between the MaxHEAT Plus 377 and the MaxHEAT 177?
Both are 4 by 17 inch petite pads with 3 heat settings, 25-minute auto shutoff, and up to 150 to 165 degrees Fahrenheit. The key difference is the cover. The MaxHEAT Plus 377 includes the Moisture-Plus cover that lets you add a moist cloth in dry climates for supplemental moisture. The MaxHEAT 177 has the standard fleece cover that relies entirely on ambient humidity.
What is the Moisture-Plus cover?
The Moisture-Plus cover produces automatic moist heat from ambient humidity like all Thermophore covers. But in very dry or heavily air-conditioned environments where there is not enough humidity in the air, the Moisture-Plus cover allows you to add a moist cloth for additional moisture. This makes the 377 the most versatile petite Thermophore for any climate.
What is the MaxHEAT Plus 377 designed for?
The MaxHEAT Plus 377 is a petite 4 by 17 inch pad designed for localized areas like the neck, cervical spine, shoulder, hip, jaw, sinuses, and small joints like the elbow, knee, ankle, or wrist. The narrow strip shape wraps around these areas for targeted heat therapy.
How does the Thermophore produce moist heat without adding water?
The fleece cover absorbs moisture from the humidity in the surrounding air. When the pad heats up, it activates that moisture into therapeutic steam that penetrates deeper into muscles and joints than dry heat alone. No water, spray bottles, or damp towels are needed. In very dry environments, the Moisture-Plus cover lets you add a moist cloth for supplemental moisture.
What temperature does the MaxHEAT Plus 377 reach?
The MaxHEAT Plus Model 377 reaches between 150 and 165 degrees Fahrenheit. It has three heat settings: Low, Medium, and High. For comparison, most generic drugstore heating pads max out at 120 to 140 degrees Fahrenheit.
Is the Thermophore MaxHEAT Plus 377 HSA or FSA eligible?
Yes. The Thermophore MaxHEAT Plus Model 377 is HSA and FSA eligible. It is also approved for Medicare and insurance reimbursement when prescribed for arthritis pain management. Check with your insurance company to verify reimbursement, which can vary by coverage.
Can I lay on this heating pad?
No. It is not recommended to lay on this or any heating pad. The pad is designed to be placed on top of or wrapped around the body area being treated. Laying on a heating pad can trap heat against the skin and increase the risk of burns.
Questions? Sales: 1-800-403-8285 · Warranty: 1-800-253-0854
Thermophore.com is managed by HRM USA Inc, 49 Richard Rd, Warminster PA 18974.
Owned by Battle Creek Equipment Company, est. 1931.