Good2Go Microwave Heat Pack - Medium (Model 491)
Good2Go Microwave Heat Pack — Medium 9" × 12" — Knee & Targeted Areas (Model 491)
Cordless moist heat therapy sized for the knee and other targeted areas. No cords, no outlets, no water needed. The patented crystal fill absorbs atmospheric moisture and releases it as therapeutic steam when microwaved. Cloud-soft fleece cover with wide elastic Velcro strap holds the pack snug so you can continue regular activities. 20–30 minutes of soothing moist heat per session. By Battle Creek Equipment Company — makers of Thermophore since 1931.
☀ Cordless Moist Heat — No Cords, No Water, No Outlets
The Good2Go 491 is the mid-size portable moist heat pack — smaller than the large 490 for precise positioning on the knee, elbow, or other targeted areas. The patented crystal fill absorbs humidity from the air between uses, then releases it as therapeutic steam when microwaved. No water to add. No cords to manage. Heat it, strap it on, and go.
About the Good2Go Medium Model 491
The Model 491 is the medium Good2Go — 9" × 12", sized between the compact Neck 492 and the large 490. It is designed specifically for the knee, but its size makes it equally effective on the elbow, hip, lower back, or any mid-size area where the larger 490 would be too bulky to position precisely.
The patented crystal fill is what separates Good2Go from grain-filled or gel alternatives. The crystals absorb atmospheric moisture between uses — up to 40% of their weight — and release that moisture as therapeutic steam when heated. No water needs to be added. Unlike rice or flaxseed fills, the crystal fill will not decay, develop unpleasant odors, or support the growth of mold and bacteria. It is non-allergenic and non-toxic.
The cloud-soft fleece cover holds the pack comfortably against the body. The wide elastic Velcro strap secures everything hands-free so you can continue regular activities during therapy. Reusable for years — far more economical than disposable single-use heat packs.
Key Features
Medium 9" × 12" — right size for knee, elbow, hip, targeted areas
Cordless — microwave only; no cords or outlets; use anywhere
Moist heat without water — crystal fill absorbs atmospheric moisture automatically
Patented crystal fill — non-allergenic; no decay, odors, mold, or bacteria
Cloud-soft fleece cover — comfortable on sensitive skin
Wide elastic Velcro strap — holds snug hands-free during activity
20–30 minutes per session — reheat in microwave for additional sessions
Reusable for years — more economical than disposable heat packs
Perfect For
Knee pain, stiffness, and arthritis
Elbow and hip targeted therapy
Muscle spasms and joint stiffness
Post-workout soreness on mid-size areas
Office use — no outlet needed at your desk
Travel — heat at the hotel; use on the go
How the Crystal Fill Produces Moist Heat
Between uses, the patented crystal fill absorbs humidity from the surrounding air — trapping up to 40% of its weight in atmospheric moisture. No water is added.
When microwaved, that stored moisture is activated as therapeutic steam inside the pack.
The fleece cover holds the steam close to the body, directing moist heat to the targeted area.
Moist heat penetrates deeper than dry heat — blocking pain signals, relaxing muscle tissue, and increasing circulation to enhance the body's natural healing.
How To Use
Model 491 — Full Specifications
Good2Go Line — Which Size Is Right?
| Feature | Large 490 | Medium 491 ★ | Neck 492 | Knee/Shoulder 493 |
|---|---|---|---|---|
| Size | 12" × 16" | 9" × 12" | 5" × 16" | Contoured |
| Best for | Back, hip, abdomen, knee | Knee, elbow, hip, targeted areas | Neck, cervical area | Knee, shoulder joints |
| Strap | Wide elastic Velcro | Wide elastic Velcro | — | Wide elastic Velcro |
| Shop | Shop Large 490 → | ★ This Product | Shop Neck 492 → | Shop 493 → |
| All Good2Go packs: microwaveable, cordless, patented crystal fill, moist heat without water, reusable. | ||||
☀ Heat Therapy Safety
- Heat in 30-second microwave cycles only — check temperature between each cycle
- Test on inner wrist before applying to body — do not overheat
- Allow to cool completely before reheating — excessive heating can cause fill expansion
Frequently Asked Questions
How does the Good2Go produce moist heat without water?
The patented crystal fill absorbs up to 40% of its weight in atmospheric moisture between uses. When microwaved, that stored moisture activates as therapeutic steam. No water, spray bottles, or damp towels needed.
What makes the crystal fill better than rice or gel?
Unlike grain fills (rice, flaxseed, wheat), the crystal fill will not decay, develop unpleasant odors, or support the growth of mold and bacteria over time. Unlike gel fills, it produces genuine moist heat from atmospheric moisture rather than dry radiant heat. It is non-allergenic, non-toxic, and designed for years of reliable use.
How is the Model 491 different from the Large 490?
The Model 491 is 9" × 12" — smaller than the Large 490 (12" × 16"). The 491 is designed for the knee and other targeted mid-size areas where more precise placement matters. The 490 is better for the full lower back, hip, and abdomen. Both share the same patented crystal fill, fleece cover, and elastic Velcro strap.
How long does the heat last?
The Good2Go delivers soothing moist heat for approximately 20–30 minutes per session, depending on microwave heating time and ambient conditions. For longer therapy, allow the pack to cool completely then reheat.
How is the Good2Go different from a Thermophore heating pad?
The Good2Go is cordless and portable — heat in the microwave and use anywhere with no outlet. Thermophore electric pads plug into a wall outlet and deliver higher sustained temperatures (up to 165–170°F) with a 25-minute auto shutoff. Choose Good2Go for portability and freedom of movement. Choose Thermophore for maximum heat intensity and sustained stationary moist heat therapy.