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SUBZERO Black 6404 Thermal underwear

THERMAL UNDERWEAR FOR EXTREME COLD
Article: 6404
8 Reviews
79 $
You save:
0 $
Color:
  • Black
Select Size:
Size Chart
  • US - XXS
    |
    EU - XS
  • US - XS
    |
    EU - S
  • US - S
    |
    EU - M
  • US - M
    |
    EU - L
  • US - L
    |
    EU - XL
  • US - XL
    |
    EU - XXL
  • US - XXL
    |
    EU - XXXL
Pre-order
Free shipping worldwide on orders over $290
100% Secure Transactions
1 year warranty
DETAILS
SUBZERO Black 6404 Thermal underwear
Warm thermal underwear with a high collar with a zipper. Made for the most cold conditions, it perfectly accumulates body heat, wicks away moisture and dries quickly.
Specification
Layering type:
Base layer
Gender:
Male
Temperature conditions:
From -32°F to 22°F
SIZE CHART
MALE
FEMALE
1.Height
Stand straight with back flat against the wall, keeping the chin parallel to the floor. Measure the distance from the floor to the top of your head.
2.Chest
Wrap the tape measure under the armpits across the widest part of your chest.
3.Waist
Stand up straight. Find the bottom of your ribs and the top of your hips. Wrap the tape measure at a level halfway between them. Make sure it’s pulled tight, but isn’t digging into your skin.
4.Hips
Place your feet together. Wrap the tape measure around the widest part of your hips.
5.Inseam
Measure the length between your crotch and the bottom of your ankle (or the expected bottom of pants).
6.Sleeve
Measure from the center back of your neck (at your spine) along your shoulder and elbow to the wrist.
INCHES
CENTIMETRES
Switch the measurement system here
JACKET, SUIT OR THERMAL CLOTHING
Jacket, suit and thermal wear size correspond to your everyday clothing. To calculate it, measure your chest and waist girth, inseam from crotch to ankle, sleeve from shoulder to wrist, and height. Match the measurements to the size chart.
Size (in)
Size (cm)
EU US
xxs xxxs
xs xxs
s xs
m s
xsk sk
l m
xl l
xlk lk
xxl xl
xxxl xxl
Height
155-165
160-170
165-175
170-180
165-175
175-185
180-190
180-190
185-195
190-200
Chest girth
80-86
84-90
88-98
96-102
100-110
100-110
108-117
124-133
116-125
124-133
Waist girth
70-76
74-80
78-88
86-92
90-100
90-100
98-107
114-123
106-115
114-123
Hips
82-88
86-92
90-100
98-104
102-112
102-112
110-119
126-35
118-127
126-135
Inseam
68-74
71-77
74-80
77-83
74-80
80-86
83-89
83-89
86-92
89-95
Sleeve
53-57
55-59
57-61
59-63
57-61
61-64
63-65
63-65
64-67
65-69
Height
61"-65"
63"-67"
65"-69"
67"-71"
65"-69"
69"-73"
71"-75"
71"-75"
73"-77"
75"-79"
Height (feet)
5'1"-5'5"
5'3"-5'7"
5'5"-5'9"
5'7-5'11"
5'5-5'9"
5'9"-6'1"
5'11"-6'3"
5'11"-6'3"
6'1"-6'5"
6'3"-6'7"
Chest girth
31" -34"
33"-35"
35"-39"
38"-40"
39"-43"
39"-43"
43"-46"
49"-52"
46"-49"
49"-52"
Waist girth
28"-30"
29"-31"
31"-35"
34"-36"
35"-39"
35"-39"
39"-42"
45"-48"
42"-45"
45"-48"
Hips
32"-35"
34"-36"
35"-39"
39"-41"
40"-44"
40"-44"
43"-47"
50"-53"
46"-50"
50"-53"
Inseam
27"-29"
28"-30"
29"-31"
30"-33"
29"-31"
31"-34"
33"-35"
33"-35"
34"-36"
35"-37"
Sleeve
21"-22"
22" - 23"
22"-24"
23"-25"
22"-24"
24"-25"
25"-26"
25"-26"
25"-26"
26"-27"
1.Height
Stand straight with back flat against the wall, keeping the chin parallel to the floor. Measure the distance from the floor to the top of your head.
2.Chest
Wrap the tape measure under the armpits across the widest part of your chest.
3.Waist
Stand up straight. Find the bottom of your ribs and the top of your hips. Wrap the tape measure at a level halfway between them. Make sure it’s pulled tight, but isn’t digging into your skin.
4.Hips
Place your feet together. Wrap the tape measure around the widest part of your hips.
5.Inseam
Measure the length between your crotch and the bottom of your ankle (or the expected bottom of pants).
6.Sleeve
Measure from the center back of your neck (at your spine) along your shoulder and elbow to the wrist.
INCHES
CENTIMETRES
Switch the measurement system here
JACKET, SUIT OR THERMAL CLOTHING
Jacket, suit and thermal wear size correspond to your everyday clothing. To calculate it, measure your chest and waist girth, inseam from crotch to ankle, sleeve from shoulder to wrist, and height. Match the measurements to the size chart.
Size (in)
Size (cm)
EU US
xxs xxxs
xs xxs
s xs
sq xsq
m s
mq sq
l m
xl l
xxl xl
Height
150-160
155-165
160-170
160-170
165-175
165-175
170-180
170-180
170-180
Chest girth
80-86
84-90
88-94
96-102
92-98
100-106
96-102
100-106
104-110
Waist girth
60-66
64-70
68-74
76-82
72-78
80-86
76-82
80-86
84-90
Hips
86-92
90-96
94-100
102-108
98-104
106-112
102-108
106-112
110-116
Inseam
69-75
72-78
75-81
75-81
78-84
78-84
81-87
81-87
81-87
Sleeve
52-56
54-58
56-60
56-60
58-62
58-62
60-64
60-64
60-64
Height
59"-63"
61"-65"
63"-67"
63"-67"
65"-69"
65"-69"
67"-71"
67"-71"
67"-71"
Height (feet)
4'11"-5'3"
5'1"-5'5"
5'3"-5'7"
5'3"-5'7"
5'5-5'9"
5'5-5'9"
5'7"-5'11"
5'7"-5'11"
5'7"-5'11"
Chest girth
31"-34"
33"-35"
35"-37"
38"-40"
36"-39"
39"-42"
38"-40"
39"-42"
41"-43"
Waist girth
24"-26"
25"-28"
27"-29"
30"-32"
28"-31"
31"-34"
30"-32"
31"-34"
33"-35"
Hips
34"-36"
35"-38"
37"-39"
40"-43"
39"-41"
42"-44"
40"-43"
42"-44"
43"-46"
Inseam
27"-30"
28"-31"
30"-32"
30"-32"
31"-33"
31"-33"
32"-34"
32"-34"
32"-34"
Sleeve
20"-22"
21"-23"
22"-24"
22"-24"
23"-24"
23"-24"
24"-25"
24"-25"
24"-25"
Q&A
Product features:
What is the difference between waders with built-in boots and stockingfoot waders?

Waders with built-in rubber boots have been used by off-road riders by habit and due to lack of alternatives. They have several drawbacks though, especially for off-road riders. Rubber boots do not support the ankle. Also, if you are stuck in a swamp, it’s much easier to pull your waders out when you are in stockingfoot waders, because they are fixed with the boots on the ankle, and are more lightweight then waders with built-in rubber boots.
Stockingfoot waders are much more common and reliable now, and they have plenty of advantages over the waders with built-in rubber boots:

  • Built-in neoprene socks. 4mm neoprene socks with glued seams and a reinforced insole provide comfort and protection. They should be worn with wading boots.
  • Proper ankle support. Unlike rubber boots, wading boots provide proper ankle support, so the chance of injury is minimized.
  • Lightweight. In terms of comfort and weight, wading boots are comparable to trekking boots. After a full day of riding,  there will be no fatigue.
  • Mobility. Since legs are well fixed in wading boots, it is easier to walk in sticky swamps or mud, and it is easier to pull your feet out if you get stuck.
  • Durability and protection. FINNTRAIL wading boots are made specifically for off-road riding. They are made of durable materials with extra reinforcements in the right places, and have special sole for use on ATV footpegs.
  • Variations and design. In addition to all of the practical advantages, you can choose boots with a cool design to match your style.

For off-road riders, especially hardcore riders, stockingfoot waders feel much more comfortable than rubber boots.

Why should I wear underwear and of what kind?

In most of cases, all the problems with sweating during the ride are associated with cotton under your gear. The fact that you sweat is normal, but wearing cotton under the membrane is a mistake.

A membrane is made for gear to "breathe". It allows air to flow inside out and sweat to evaporate, while not letting outside moisture come inside. If pure cotton is worn as thermal underwear, the water and sweat path ends there. Because cotton is an absorbent material, it holds everything that the skin emits and makes it uncomfortably moist inside the gear.

It is very important to put on a proper thermal layer that does not retain moisture under the membrane. It also doesn't have to be 100% synthetic. Blended fabrics with a minimum amount of synthetic fibers (even 20%) may work. In general, the less cotton, the better the moisture wicking quality is though. This also includes the top and bottom of the gear, and socks.

For the cold season, use additional insulated thermal underwear as a second layer after the base layer thermal clothes — a fleece is a good choice.

Do I need to order any accessories?

Base layer thermal underwear is the trickiest thing. Riders usually think they don’t need it in summer. The thing is, you need it not to warm yourself but to control thermal insulation and proper sweat evaporation. It is made specifically to be worn under waders and jackets as the first layer. The same goes for thermal socks.

Waterproof bags and backpacks are must-have for your belongings and dry clothes.

Waterproof smartphone pouch will protect your phone from water. With a waterproof pouch you can take shots under the water or use your smartphone without needing to clean your hands every time you use it.

Gloves provide extra comfort when riding ATVs and UTVs, and keep your hands dry and protected from sharp twigs and stones.

Check the headwear page to find balaclavas, buffs, hats and caps to complete your off-road warrior set.

Product assortment:
How do I choose the right waders?

There are several factors to consider. All membrane waders are durable, lightweight and breathable, so they are comfortable at any time of the year. 

Please remember to wear thermal underwear as a base layer for the membrane to work most effectively.  Thermal underwear keeps you comfortable by transferring moisture away from the skin.
We like to divide gear by type of riding:

  • If you plan to ride from time to time and don’t plan to overcome hard off-road obstacles, Wademan waders will be enough. They are made of a durable 4-layer fabric with a HARD-TEX membrane and have a minimum of seams, especially on the inside of the legs.
  • If you prefer hardcore riding, take a look at Enduro waders. They are made of a durable five-layer HARD-TEX membrane from the feet to the waist. Also consider Aquamaster waders. They have no cross seams on the inside of the legs, and are reinforced with a durable five-layer HARD-TEX membrane. Both choices have a minimum of seams on the inside of the legs, so they are more resistant to wear.
  • We also have waders with zdirt resistant zippers: durable and technologically advanced Speedmaster-Zip which provide incomparable comfort in the moments when you need to do the deed.

Waders with built-in rubber boots are quite popular, but waders with wading boots are technologically advanced, safe and comfortable and are becoming more popular nowadays because of their advantages. So, think twice when buying waders — make a right choice.

How do I choose the right size?

We have an easy-to-read sizing chart to help you find your size.  Men’s and Women’s sizing is shown there.  If you choose the boots for a woman, choose one size smaller boots, as 8 men US size boot equals 9 US for women.
If you still have any questions, feel free to use the site chat or contact us by email shop@finntrail.com

Product Care:
How should I store my gear? Are there any rules?

Our blog comes in handy. Learn more in How to store gear. This short article covers all the questions on the topic.

How should I clean my gear? Are there any rules?

This is a pretty tricky question. We talk about it in detail in our blog. Learn more in our short article How to clean gear after riding.

Payment:
How can I pay for my order?

We accept the following payment methods:

  • Visa
  • Mastercard
  • PayPal

Credit card information is always encrypted for a secure purchase.
If needed, you can request for an invoice in order to make payment directly to our bank account.

Is my credit card charged as soon as I submit my order?

Yes, your credit card will be charged when you place your order, and the products in your order will be reserved for you. If your credit card is declined, your order will become void and you will be sent an email confirming this. Please check the status of your order or try another card and place the order again if your order is voided. Also, please, do not hesitate to contact us by email shop@finntrail.com with every question you have.

If my order is submitted on the FINNTRAIL site, does that mean that all of the items I ordered are available?

Our online inventory numbers are synced many times per day, and most orders are fulfilled promptly after submission, as you would expect. However, if timing is such that an item did happen to sell out just before you submitted your order, we will get in contact with you (usually by email), and inform you of the situation.

Shipping:
What shipping options do you offer?

Nowadays we offer free standard ground shipping for orders over 290 USD/EUR/CAD. For other orders the standard shipping cost is 25 USD / 20 EUR / 19 CAD.

Delivery time varies by location.
Please, contact us by shop@finntrail.com if you want your order to be shipped with another shipping method.

Can you ship the order to another address?

Yes, but please note that the billing address and the name on the credit card has to match that of the customer for the order.

Returns and exchanges:
How can I return or exchange my order?

If you are not satisfied with your order, you can return it for a refund or exchange it. Find more info at the returns and exchanges page.

Other:
How can I become a dealer?

Just visit the dealers page and you will find all the information about a partnership with us.

You can also contact us by email if you want to discuss the terms of cooperation with us shop@finntrail.com

REVIEWS
8 Reviews
Most of users rate this product as exellent. You may write your own review below:
5 8 8
Soft fleece. Pleasant to the body.
Rode in winter. Never frozen. I rode in -20 and felt very comfortable.
Subzero is excellent. Great fit, it's not cold in the cold, but I don't sweat either. Of course, it can be hot indoors.
Absolutely love the collar. My neck is warm and cozy =)
Good quality, nice fleece. Very tight to the throat and body, which is why the heat is perfectly retained. It is also impossible for snow to get into the collar. Excellent thermal!
I use it together with Termobala and tuck it under the fastening collar. I forgot what scarves are in winter, since the wind does not get there at all!
Be warned, these are REALLY warm thermals.
Tested in 5°F. Didn't freeze at all.
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