Finish a 12‑hour shift drier
Maxx-Dri Vest Elite Body armor ventilation
The Maxx-Dri Vest uses 3D spacer technology to create separation: a layer of air between your body armor and your base layer, so sweat dries while you work.
- Your base layer is much drier at the end of your shift
- Sweat stops soaking into your carrier, so the itch, odor and vest funk go with it
- The weight of your armor spreads evenly across your torso instead of digging into your shoulders and neck
- Non-slip grips front and back, so it stays put under your armor
Trusted by 700,000+ officers since the first Maxx-Dri Vest. Not body armor: it goes under yours.
Will I still sweat?
Yes, and anyone who tells you otherwise is selling something. The difference is where the sweat goes. The 3D spacer lets air move, so sweat evaporates during the shift instead of pooling in your shirt and carrier. Officers describe the shirt going from soaked to damp at worst.
Will it feel bulky under my vest?
No. Its 3D spacer technology adds approximately 9mm of separation between your body armor and your base layer, and it works under both outer and concealed carriers. If you're between sizes, order a size down for a snug fit.
Which size do I need?
Tap “Find my size” above and enter your weight and chest. Sizing is the one thing to get right. If you land between two sizes, go with the smaller one.
Officers who wear it every shift
Jared · 10 yearsHour two. Your armor is a sealed slab.
Your shirt is drenched by mid-shift, and the sweat soaks straight into your carrier.
Wicking shirts, powder, a spare shirt in your locker: none of it works when the armor seals the air out.
A 9mm layer of moving air
The 3D spacer creates separation: a layer of air between your body armor and your base layer. That separation is the whole idea.
Wear it directly beneath your armor
Over your base layer, under your carrier. Outer or concealed. No change to your armor setup.
Air gets in
The open 3D spacer creates separation and a layer of air, keeping your body armor off your base layer. Cooling channels down the front and back spine move air across your chest and back, 360°.
Sweat gets out
Moisture evaporates instead of soaking into your vest. Your base layer and your carrier both dry out during the shift.
Straight answer: you'll still sweat. The Maxx-Dri Vest gives that sweat somewhere to go. In extreme humidity it won't make you bone dry, but officers in Florida, Texas and Missouri still say the difference is huge.
Lift the panel. That's the gap.
A deputy shows where the heat escapes on his own duty carrier.
They were skeptical too
“First day I wore it I had no sweat pooling under my vest.”
“I was skeptical, the price seemed high. Dry and comfortable the whole shift. Glad I gave it a shot.”
“Like going from a long run to a light jog.”
“I sweat a lot under my vest. My shirt used to be soaked by the end of the day. Now it is damp at worst.”
“The stand-off really does make the difference.”
“I tried it outdoors a few times in the Florida heat with a plate carrier and plates, and the stand-off it provided really does make the difference in keeping you a bit cooler. Definitely worth the money if you live in a warm environment.”
“You will feel the breeze under the vest.”
“No, this won't keep you from sweating. But you will feel the breeze under the vest, which dries your sweat and cools you down. Fourteen years of patrol experience, and this is absolutely worth the cost.”
“Easily a 70–80% difference throughout the day.”
“I wear a 30lb vest in Texas. It is the closest thing to a fix I have found.”
What officers asked us to fix
Hook-and-loop, front and back
The side straps now attach and detach on both ends, or come off completely.
More separation, more open 3D spacer
The 3D spacer gives 1.5mm more separation than the Advanced, and the honeycomb holes are larger, so more air gets through.
Removable, double-adjustable straps
Dial the fit from both ends, or pull the straps and let your carrier do the holding.
Non-slip panels front and rear
Rubber grip strips on the sides, center and back keep it in place beneath your carrier.
Shoulder straps & wider cummerbund
Feed your carrier straps through the shoulders, with an extra-wide cummerbund that holds it in place.
| Feature | Core | Advanced | Elite |
|---|---|---|---|
| More separation, larger air holes | – | ✕ | ✓ |
| Cooling spine, front & rear | front | ✓ | ✓ |
| Front & rear cooling channels | ✕ | ✓ | ✓ |
| Removable side straps | ✕ | ✕ | ✓ |
| Non-slip side panels | ✕ | ✕ | ✓ |
| Extra-wide cummerbund | ✕ | ✓ | ✓ |
| Lifetime warranty | ✓ | ✓ | ✓ |
From 221B's Maxx-Dri comparison chart.
Worth wearing in every season
Winter
In and out of the car all night, damp sweat under armor turns cold fast. Keeping it dry keeps you from freezing at the next stop.
Summer
Heat and sweat escape instead of soaking in, so you stay cooler on long, humid shifts.
One deputy skipped it on a cool day thinking he didn't need it. His vest felt uncomfortable all shift: the Maxx-Dri Vest also spreads the armor's weight across the torso.
Invented after 13 years in armor
221B Tactical started with one product. Suresh spent 13 years as a police officer wearing body armor through hot summers and cold nights, and the Maxx-Dri Vest was his fix: create separation, a layer of air between body armor and base layer. Five generations later, the Maxx-Dri Vest is still built around that idea, and every upgrade traces back to an officer's complaint.
“Last year I was shot four times. One of those times was in the chest… My bruising, minimal. It was yellow. I didn't have any broken bones. I attest that to the Maxx-Dri vest.”
Jared, Missouri officer, on Maxx-Dri since 2016Officer's own account. The Maxx-Dri Vest is not body armor.If you wear armor for a living
About 3 cents a day over a 20-year career. $189, backed by a lifetime warranty against defects, so one vest can last the whole career.
Kitting out a squad? Officer Danny G. showed his sheriff, and the department bought one for every deputy. For agency and bulk pricing, email sales@221btactical.com.
Against what officers actually try
| Feature | Maxx-Dri Vest | Wicking tee | Powder | Toughing it out |
|---|---|---|---|---|
| Dries your shirt during the shift | ✓ | ✕ | ✕ | ✕ |
| Stops the vest smell | ✓ | ✕ | – | ✕ |
| Less heat rash & chafing | ✓ | – | short-term | ✕ |
| Spreads armor weight | ✓ | ✕ | ✕ | ✕ |
| Money-back guarantee | 90 days | varies | – | – |
Come off watch with a dry shirt
Wear it 90 days on real shifts. If you're not cooler and drier under your armor, send it back for a full refund. Lifetime warranty against defects.
Questions officers actually ask
Is this a bulletproof vest?
No. The Maxx-Dri Vest goes under your body armor to make wearing armor bearable. It provides no ballistic protection on its own.
Does it work with a concealed or inner carrier?
Yes. It works under concealed and outer carriers, with the strongest airflow across the front panel. The 90-day guarantee covers you either way.
Does it help in cold weather?
Yes. Dry skin under the armor means you don't get chilled by cold, damp sweat every time you step out of the car.
What's the guarantee?
Wear it 90 days on real shifts. Not cooler and drier? Send it back for a full refund. Every Maxx-Dri Vest also carries a lifetime warranty against manufacturing defects.
Buying for a department?
Agency and bulk orders are handled directly. Email sales@221btactical.com for department pricing.
How should it fit, and what if I'm between sizes?
Snug against your base layer. Use “Find my size” or the size chart: weight first, then chest. Between two sizes, order a size down for a snug fit.
How thick is it?
The 3D spacer adds approximately 9mm of separation between your body armor and your base layer. That layer of air is what lets sweat dry during the shift.
How do I wash it?
Machine wash cold on gentle, or hand wash, then drip dry. No dryer. Because sweat stops soaking into your carrier, you'll wash the carrier less often too.
How fast does it ship?
Orders ship from Florida within 1–2 business days. Free shipping on orders $199+.