“I mainly switch it on when I stop moving.”
Bought for travel and waiting outside. The big plus is that I can add heat exactly when the cold starts to be noticeable.
Customer reviews
Field 9 protects your neck, stomach and back in a smart technical vest, and you feel the heat in 10 seconds. Turn it down when you move and up during breaks, in the wind or while waiting.
You are ordering the QUILLMORE Field 9 Olive Green – unisex technical heated vest. The contents are shown clearly before the cart, so you avoid unpleasant surprises when you unpack.
In the package:
Compare the measurements with the size guide. If you are between two sizes or wear the vest over a fleece, choose the larger size.
| Your situation | Recommended choice |
|---|---|
| You usually wear the same size | Choose your regular size |
| Between two sizes | Choose the size above |
| Thick layer underneath | Allow a little extra room |
| More direct heat | Choose a fit that sits fairly close to the body |
Yes. Remove the battery and close the zips. Machine-wash the garment on a gentle cycle at 30 °C maximum. Let it dry completely before reconnecting. Never wash the battery.
Customer reviews

I take the van on trips every weekend from October to March. Mornings in the mountains are when it matters, and I thought a sleeveless vest would be useless. In reality, the cold comes from your back, not your arms. I turn it on while the coffee is brewing, and then I’m comfortable.

I am a site supervisor in landscaping and am outside from 7 a.m. to 5 p.m. I wear it under my hi-vis vest, and no one can see anything. I keep it on low all morning and turn it up when we take a break. Free arms are essential for working.

My workshop isn’t heated, and I’m not going to heat 650 sq ft (60 m²) just for myself. The button is easy to find even when your hands are full. Three levels are more than enough; I use the first one most of the time.

I work in the garden early in the morning, before it gets warmer. I used to go inside after twenty minutes because my lower back was freezing. Now I stay outside. It is really the warmth in the lower back that makes all the difference; I did not expect that.

I cycle to work for 25 minutes morning and evening. It works perfectly under my wind jacket without getting in the way when I pedal. One small downside: on the first day I set it straight to maximum and got warm too quickly. On low, it is perfect, and it lasts all week.

I work from home in a poorly insulated apartment. I always had a blanket over my shoulders and cold hands. Now I put it on in the morning and turn it off around noon when the sun comes out. My bill has not changed, but I do not shiver anymore.

Four hours on watch without moving brings a kind of cold that cannot be compared to walking. The back and lower back first – that is exactly where the cold gets in. I used it all season and never ran out.

I wear it under my city coat. It does not add bulk and cannot be seen at all. The morning torture on the train platform is over. I bought it for travel, but I end up wearing it all day at the office.

I stand at the market three mornings a week, out in the cold. Choose one size up if you wear a thick sweater underneath; I had to exchange mine. The return went through without any argument in a few days. Since then everything has been perfect, and I hardly ever take it off.

My daughter gave it to me, and I thought it would end up in the closet. I wear it in the morning on the balcony with my tea and when I go out for bread. It’s simple: one button, no complicated app. Exactly what I needed.
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Tested at −9 °F (−23 °C) · heat in 10 seconds · 90-day returns
Heat is available when you set down your backpack, wait by the water, or slow down outdoors.
Visual proof
One zone at the neck, two on the stomach and six on the back complete the protection provided by the outer fabric.
This changes the model
Field 9 does not try to heat at maximum all the time. It gives you an adjustable heat reserve when your effort drops.
Easy to use
Connect the battery, wear the vest close to your body, and use the round button according to the wind and activity.
1. Connect
Place the battery in the pocket designed for it.
2. Set off
Use a low setting or keep the heat off while you are active.
3. Turn on
Use the round button when you slow down.
4. Adjust
Adjust it according to how long the break lasts and how windy it is.
Package and receipt
Field 9 vest, compatible 20,000 mAh battery included free of charge, cable and instructions from QUILLMORE. You do not need to look for any essential accessories after ordering.
Why this choice
Field 9 adds an adjustable heat source when your effort drops, without forcing you to wear a thick layer while walking.
It blocks some of the wind, but still relies on the heat produced by the activity.
Warmer when you stand still, but quickly bulky and damp when the activity level picks up again.
A technical vest that lets you move easily and have heat available during breaks.
A ready-to-use heating kitBefore the cart
Zero risk
Frequently asked questions
Straight answers to the questions that often come up before ordering.
Yes, because they are placed where the cold takes hold first: one at the neck, two on the abdomen and six in the back. Field 9 Olive Green concentrates the heat on these points instead of spreading it out, with three levels adjusted directly using the round button on the chest, and noticeable warmth after around ten seconds. You have 90 days to try it by the water or on the trail – otherwise, you get your money back.
Yes – that is exactly the point. Field 9 is sleeveless and close-fitting, and slips under a jacket or coat without making your outfit bulky. Used on its own, it is enough for a walk or a cool indoor environment.
It depends more on your setting than on a number in a brochure. Out in the field, you use a low level while walking and a high level during breaks or into the wind – Field 9 can be adjusted precisely for this type of use, and that is what makes the compatible 20,000 mAh battery included free of charge in the package last. Charge it the evening before, head to the water’s edge and judge for yourself: you have 90 days.
In light, brief rain, simply keep the connectors protected. In heavy or prolonged rain, use a suitable outer layer and let everything dry completely before reconnecting the electrical parts.
Yes. Remove the battery and close the zips. Machine-wash the garment on a gentle cycle at 30 °C maximum. Let it dry completely before reconnecting. Never wash the battery.
We have tested our heating systems in real conditions at −9 °F (−23 °C). The high setting (113 °F (45 °C) on the surface of the zones) is made for those moments, while the low setting gives you longer runtime.
You have 90 days to try it at home and request a return in accordance with the store’s current return terms. Unsure after purchase? Customer support replies within 24–48 business hours. The 5-year warranty included (optional lifetime upgrade at checkout) is alongside any applicable statutory consumer rights.
This is the market's real problem: customer service that cannot be reached, and refunds that never arrive. At QUILLMORE, you get customer support with replies within 24–48 business hours, a 90-day satisfaction guarantee or your money back — the full terms are published, not hidden — easy exchanges and a 5-year warranty included (optional lifetime upgrade at checkout) alongside any applicable statutory consumer rights. Write to us: Messages are read, and you get a reply.
Final decision
Choose your size and try Field 9 Olive Green for 90 days.
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Compare without starting over: first similar models, then useful accessories.
Compare the fits and keep your arms free with the heat level that suits you.
Before you check out
Add a spare battery or a second garment.
Up to 30% off batteries when you buy more. 20,000 mAh battery free with every garment.
Added straight to your order, shipping still free.