Heated zones
Front, back and collar.
Heat on your core, where the coat on top holds it best.

| Size | Chest | Length | Fits about |
|---|---|---|---|
| XS |
41 in 104 cm |
24.4 in 62 cm |
110–130 lb |
| S |
42.5 in 108 cm |
25.2 in 64 cm |
135–145 lb |
| M |
44.1 in 112 cm |
26 in 66 cm |
150–160 lb |
| L |
45.7 in 116 cm |
26.8 in 68 cm |
165–175 lb |
| XL |
47.2 in 120 cm |
27.6 in 70 cm |
175–185 lb |
| XXL |
48.8 in 124 cm |
28.3 in 72 cm |
190–200 lb |
Measure a vest you own flat across the chest, double it, and pick the size at or above that number. In the two-pack, each vest gets its own size.
Heated vest
Your coat holds heat, it doesn't make it. HeatGuard adds heat to your chest, back and collar with 9 zones, run by the 10,000 mAh power bank in the box, up to 8 hours on low. It goes under the coat you already own, so you stay warm sitting still: on the bleachers, at the school gate, on the dog walk.
Up close
The details that matter under a coat, and where it heats.
Heat
Panels sit on both front sides, across the back and in the collar, right on your core.
Levels
Hold 3 to 5 seconds to switch on, then tap through high, medium and low.
Layer
A thin middle layer under your own coat. The coat on top keeps the heat in.
Illustration. The heated zones sit on both front sides, the back and the collar.
Power
The one in the box, or a spare of your own with a 5V/2A output or more.
Care
Take the power bank out, then use a gentle cycle in a laundry bag or wash by hand.
Fit
Pick by the chest, in inches, and choose a size for each vest in the two-pack.
Heated zones
Heat on your core, where the coat on top holds it best.
In the box
10,000 mAh
The power bank ships with every vest, two with the two-pack, so it works the day it lands.
Choose your packComparison
The four things that decide if you stay warm: the battery, what it runs on, where it heats and how long it lasts.
HeatGuard
Brand-name vest
Budget vest
Brand-name 7.4V vests: ORORO Classic, Venustas M2118 and Fieldsheer Xtera, from the makers' listings (Sept 2026). Budget: vests sold without a battery.
Before you buy
Why choose it
Night games, riding lessons, the Christmas market: the places where you sit or stand for hours and the cold gets in. The vest heats your back and chest under the coat you came in.
Every vest ships with its own 10,000 mAh power bank, so it works the day it arrives.
Everyone knows one: the wife, the mom, the dad who won’t turn the heat up. The two-pack puts one on you and one on them.
It is a thin middle layer. Your own coat goes on top and keeps the heat in. And with your core warm, your body keeps blood flowing to your hands, so your fingers stay warmer too.
XS to XXL in US sizes, each with its chest measurement. In the two-pack, each vest gets its own size.
I'm always the one who gets cold the minute we stop on a hike. It goes under my usual coat, I switch it on at the lookout, and the warmth lands right on my back and collar.
Denise
Sitting still on a bucket is where I always froze. The power bank came in the box and rides in the inside pocket, and my spare phone pack runs it too.
Rick
Camp mornings used to mean staying in the sleeping bag. Now it's coffee in the chair, the vest zipped under my jacket. After the trip I pull the power bank and wash it by hand.
Laura
Specs
Before you buy
Yes. Every vest ships with a 10,000 mAh USB power bank, and the two-pack ships with two. It plugs into the cable in the inside-left pocket.
Up to 8 hours on low with the 10,000 mAh power bank in the box. High runs shorter, so most people start on high and step down once they’re warm. A second power bank in a pocket doubles your time.
Yes, as long as its USB-A port puts out 5V/2A or more, which most current power banks do. Older 5V/1A ones may not switch it on. A bigger power bank means more time between charges.
Yes. Take the power bank out and tuck the cable into its pocket. Use a gentle cycle inside a laundry bag, or wash it by hand, and let it air dry fully before you plug the power bank back in.
Go by the tape. Lay a vest or jacket you own flat, measure across the chest and double it, then pick the size at or above that number: XS 41 in, S 42.5, M 44.1, L 45.7, XL 47.2, XXL 48.8. As a rough guide, XS fits about 110–130 lb and XXL about 190–200 lb. Between two sizes, go up. In the two-pack you pick a size for each vest.
It heats your front, your back and the back of your neck. Arms and legs stay with your coat. It works best zipped under a coat, which keeps the heat in.
A vest goes under the coat you already own, so you keep your own sleeves, hood and look, and the vest adds the heat. A heated jacket replaces your coat.
Send it back within 30 days of delivery for a refund of the product price. That is long enough to wear it to a game, on the morning walk and through a cold week at your desk.
30-day returns · Free US shipping
Zip it under your coat, start on high, and sit through the whole thing. If you’re still the cold one in the row, send it back within 30 days for a refund of the product price.
Free US shipping · secure checkout