This Dr.warm W4 heated insole go inside your shoes, boots, or ski boots and attach to a battery pack via a 22” cord. They distribute the heat evenly throughout your entire foot and sometimes have the capability to adjust according to the temperature inside your boot and provide anywhere from 2.5 to 7 hours of reliable heat when walking, working, skiing or even riding a motorcycle.
Product Specifications 
Dr.warm W4 Heated Insoles include two 4000mAh 3.7V Li-ion batteries, heating up for about 7 hours with low heat and for about 3 hours with high heat.
Also, the heated insoles have 3 heat settings – low heat, medium heat, high heat - so that you can choose your right temperature and stay comfortable according to different environments.
Temperature Choice:
Low Heat: 104-122℉/40-50℃ | 6-7 hours
Medium: Heat: 122-140℉/50-60℃ | 4-5 hours
High Heat: 140-158℉/60-70℃ | 2.5-3 hours
Note: The data above was collected at a temperature of 25℃/77℉. The working temperature and time may vary according to the ambient environment.
These heated insoles provide heat to forefoot and the heel
Product Instructions 
Crafted from high-quality and environment OrthoLite foam material, this high-performance material provides breathable, sweat-absorbent, durable and good cushioning.
OrthoLite foam compresses less than 5% over the lifetime of the product—so the cushioning, fit, comfort and performance never change.
SIZE: heated insoles can be easily trimmed and adapted. One size fits all for women and men (US Shoes Size 6-13). It’s ideal for all kinds of shoes.
Note: cut along the cutting lines, and don't cut the "DO NOT CUT" area and it will destroy the heating components
Double-Sided Reversible Micro USB design will plug into your device and computer’s USB Port in either direction. Saves time by eliminating the guesswork when connecting to your computer/device. No More Fumbling! (Can be connected with the car charger, power bank, computer mobile charge, etc)
KEEP YOUR FEET WARM - Dr.Warm
Rechargeable Battery Heated Insoles could solve your cold feet problem in the freezing weather. Keep you more vitality for some activities of the winter like Hunting, Skiing, Motorbiking, Mountain climbing or Walking etc. Simple and easy operation.
PREMIUM MATERIAL
High-quality Ortholite foam & carbon fiber that is breathable conducts heat efficiently, offers great shape retention and shock absorbency. You can cut the unisex warm insoles into your own size according you need. The shoe size range is given on the insoles for your convenience. One Size Fits All for Women and Men. Ideal for all kinds of shoes.
KEEP YOUR FEET WARM
Dr.Warm Rechargeable Battery Heated Insoles could solve your cold feet problem in the freezing weather. Keep you more vitality for some activities of the winter like Hunting, Skiing, Motorbiking, Mountain climbing or Walking etc. Simple and easy operation.
Product Applications 
Packing List 
| SIZE | EUR | US MAN | US WOMAN | LENGTH mm |
| S | 35 | 4 | 5.5 | 231.1 |
| 36 | 5 | 6.5 | 237.1 | |
| 37 | 5.5 | 7 | 244.4 | |
| M | 38 | 6.5 | 8 | 251.1 |
| 39 | 7 | 8.5 | 257.7 | |
| 40 | 8 | 9.5 | 264.4 | |
| L | 41 | 8.5 | 10 | 271.1 |
| 42 | 9.5 | 10.5 | 277.8 | |
| 43 | 10 | 11 | 284.4 | |
| XL | 44 | 10.5 | 291.5 | |
| 45 | 11 | 298.2 | ||
| 46 | 12 | 304.9 |
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