Mobile Warming Technology is a performance heated apparel line by Fieldsheer. Our garments keep you warm in the most extreme conditions. Battery powered and many garments bluetooth controlled, our jackets, vests, gloves and socks utilize the latest infrared technology to provide outstanding levels of warmth.

Our heated products with Mobile Warming technology are operated via 3.7v, 7.4v, and 12v rechargeable batteries. Simply connect the battery to the cord found in your garment, turn on the battery, and press and hold the touch-control button on your garment on until the LED lights up. Press the touch-control button quickly to to achieve your desired level of warmth.

There are two commonly missed steps to turning on the heating panels. First, turn on the battery by pressing and holding for 3-5 seconds. Second, press and hold the garment's power button for 3-5 seconds. Below are more detailed steps to turning on our 12V garments.

1. Fully charge the battery and connect it to the garment.
2. Press and hold the battery's power button for 3-5 seconds until the 100% LED is blinking.
3. Press and hold the garment's power button for 3-5 seconds. The button will turn red, which indicated the hottest setting.
4. To cycle through the settings, briefly press the garment’s power button.
5. To turn off your garment, hold the garment's power button for 3-5 seconds again.
6. If you are having trouble turning your garment back on, please charge your batteries. Be aware batteries are often not fully charged when they first arrive.

Tutorial Videos:

12v Garments: https://youtu.be/Cg3_pvU0Xn8

7.4v Garments: https://youtu.be/hNxyCI7bRIM

3.7v Premium Socks: https://youtu.be/ie4sLg3_mEM

3.7v Garments: https://youtu.be/npLiHAT0Gxg

MC Connect App: https://youtu.be/LKlxKMhW-MM

Please contact us if you continue to have trouble turning on your garment!

All Fieldsheer garments have an athletic fit. Please check our sizing chart before ordering at fieldsheer.com/pages/size-chart.

Detailed garment care instructions are included with all products. Most products are machine washable. Please consult our Apparel Care page for specific instructions regarding your garment.

All Fieldsheer garments have a 1 year product warranty from the date of purchase. To activate your warranty, you must register at the following page: https://fieldsheer.com/pages/product-registration.

Although our heated gear is tested to meet all regulations for Radio Frequency, it is possible to cause interference with Avalanche Transceivers due the heating elements and Bluetooth Low Energy incorporated in our heated gear. Therefore, it is recommended to turn off the heated apparel / gloves while searching using Avalanche Trasceiver to reduce the possibility of interference. If you are buried while wearing heated apparel / Gloves while turned on, the search beacon will see interference when it is within a 1/2 meter radius of the heated apparel / gloves.

Online orders are processed Monday through Friday by 9 am PST. Any order placed after 9 am PST will be processed the next business day. Orders that qualify for free shipping are sent via FedEx Ground or FedEx Smartpost. Transit times vary. USPS Priority Mail is available for a flat fee of $9.99. Faster transit times are also available at an increased cost. You will receive a confirmation email once your order has shipped with tracking information. If you have any questions about your order, send us an email at info@fieldsheer.com and someone from our team will be in touch within 48 hours.

We aim to get you your product as quickly as possible. Once your order is processed, we cannot cancel it. If you wish to return it, please follow our return process found on the Returns & Exchanges page.

Fieldsheer.com offers a 30 Day Money Back Guarantee intended to give you peace of mind when purchasing Fieldsheer heated apparel online at fieldsheer.com. If you aren't satisfied with your purchase, you can return your new and unused product purchased from Fieldsheer.com, in its original packaging and with all applicable tags attached, within 30 days of the date you received your order, and we will happily refund the purchase price. To start a return, please visit our returns and exchanges page. Please note, all costs associated with returning product under this guarantee are the responsibility of the purchaser. When returning items, please be sure to use a traceable method and retain proof of postage paid and the tracking number.

Our warranty applies only to the original purchaser and only for items purchased from an authorized Fieldsheer Dealer.

LIMITED ONE YEAR WARRANTY

When you purchase a Fieldsheer brand product from an authorized Fieldsheer retailer within the United States the materials and construction of the product is warranted to be completely free from factory defects in materials and workmanship for a period of one (1) year from the date of purchase. If any failure in the fabrics or construction of any Fieldsheer product covered under this warranty occurs due to the manufacturer’s defect within one (1) year of the purchase of the product, the product will be repaired at no charge.

Costs associated with shipping the item in under warranty is the responsibility of the purchaser.

Batteries with white LEDS (Model No.s: MW74V040, MW74V022, MW74V023), turn on by briefly pressing the power button. Multiple lights will appear and stay on. Pressing and holding the power button on these batteries will turn them off.

Batteries with green or red LEDs (Model No.s: MW74V22, MW12V52, MW37V22-N, MW37V022, MW37V122), press and hold the battery’s power button for 3-5 seconds. Only the 100% will appear and stay on.

Some batteries have a timer after which they will shut off if not powering a garment. If your battery is turned on and powering a garment, but randomly shuts off while it still has a charge, please contact our customer services as: cs@fieldsheer.com. We would be happy to assist you with troubleshooting and looking into a warranty.

The amount of time the battery lasts will vary due to several factors such as the number of heating panels in the garment, the mAh of the battery, and the outside temperature. Most garments used with their original batteyr last approximately 8-10 hours on low and 2-3 hours on high.

Please refer to your garment's user manual for estimated heat times for your specific product. https://fieldsheer.com/pages/user-manuals

Battery models MW12V52 and MW74V040 both can charge your phone or other devices through their USB-A output. While charging another device, your battery should not be plugged into your heated garment or its own charger.

You can purchase additional batteries from www.fieldsheer.com

Refer to your user manual for details on battery care or visit fieldsheer.com/pages/battery-care.

Do not throw into the trash. We recommend to dispose of your battery at an authorized recycling facility.

Battery Performance, in regards to both battery capacity and function, is directly affected by the temperature outside. This will vary from garment to garment as it depends on how the battery pack is exposed. However, to provide some guidelines on operating temperature for our battery see the specs above.

Yes. The new 7.4V Micro USB batteries DC port is compatible with older 7.4V garments.

Depending upon your Mobile Warming garment, the following batteries LED indicator shows the garment battery is turned on:
12v Garments with Battery MW12V52 – Single flashing 100% LED (Turn on: Hold for 3-5 seconds. Pressing once will display battery life only.)
7.4v Garments with Battery MW74V222 – Single solid 100% LED (Turn on: Hold for 3-5 seconds. Pressing once will display battery life only.)
3.7v Premium Sock Battery MW37V22-N – Single solid 100% LED and flashing 25% LED. (Turn on: Hold for 3-5 seconds. Pressing once will display battery life only.)
3.7v Standard Sock Battery MW370 – Single solid 100% LED (Turn on: Hold for 3-5 seconds. Pressing once will display battery life only.)
7.4v Garments with Battery MWLB74V022 – Four solid LEDs (Turn on: Press once. Turn off: Press for 3-5 seconds.)
7.4v Garments with Battery MWLB74V022 – Four solid LEDs (Turn on: Press once. Turn off: Press for 3-5 seconds.)
5v Gloves with Battery MW05V047 – Four solid LEDs (Turn on: Press once. Turn off: Press twice.)

1. For iPhone users: verify your iOS is 9.0 or later
2. For Android users: verify your OS version is 5.0 or later
3. Permissions:
   Bluetooth function: Our app uses Bluetooth BLE to connect with your phone. When you first use our MW Connect app, the app will require permission to access Bluetooth or Location services to utilize Bluetooth BLE. Please select Yes.
4. Support: If any questions, please feel free to contact our support staff at cs@fieldsheer.com

Please refer to detail instructions in your user manual for using the MW connect app.

For further information on connecting your Bluetooth heated socks, please follow below instructions

Pairing for Premium BT Socks

1. Install the MW App to your desired device.
2. Enable Bluetooth on your device.
3. Power on both Premium BT Socks.
4. Launch the MW Connect™ app. MW Connect™ will auto-scan for available Mobile Warming Garments. MW Connect™ will display your garment as “user name”.
5. For each available garment, select the "Connect" button to establish a Bluetooth connection between MW Connect™ and the garment.
6. When connected, MW Connect™ will display heat controls, battery level, and current heat setting of the garment.
7. Select the Gear Icon ⚙ next to the garment name, and use the RENAME command to enter a familiar garment name, for example - “John’s Socks” or “Left Sock” or “Right Sock”.
8. After the garment is connected, MW Connect™ will automatically connect to garment whenever the garment is powered on.

Great! You are successfully paired! Now you can use the MW Connect™ app to remotely control heat settings and monitor the power levels on your connected garments. You are now ready to stay warm and comfortable for hours.

For additional troubleshooting steps, visit the MW Connect App page.