Sub Zero Factor 1 Plus Mens Short Sleeve Base Layer Tops

Front detail on a Sub Zero Factor 1 Plus Mens short sleeve thermal base layer top in black colour

Factor 1 Plus Mens Short Sleeve Base Layer Top

£44.99

Mens Factor 1 Plus Base Layer Size Chart

SIZING GUIDE
There are no standard sizes for clothing, which is why each brand has their own unique cut and fit. Please do not presume you are the same size between brands for a similar product. If you have a base layer that fits correctly, then use it as a template for these measurements.

HOW TO MEASURE
Chest - Measure the full circumference of your chest just below the armpits
Waist - Measure the full circumference at the top of your hips
Back Drop - Measure from the back of your neck to the base of your spine
Arm Length* - Measure from the end of your shoulder to your wrist

* This measurement is only applicable for long sleeves. Short sleeve versions of the base layer tops finish just above the elbow.

BASE LAYER FIT
Our base layers have a lot of stretch, so they will contour to most body shapes when worn. You should wear them close fitting but not so they are restrictive. Wearing baggy or ill fitting base layers will lead to the loss of heat and a reduction in their wicking properties.

Please be aware that these measurements are taken from the garments unstretched, apart from the 'TO FIT CHEST' column, that indicates the range of fit. The back-drop is the critical measurement. This ensures the body length is correct to prevent lower back exposure. Even if the chest measurement looks too small, the stretch of the fabric will enable a good fit.

The table below shows the garment measurements for our Factor 1 Plus base layers. There is a tolerance of +/- 5mm.

SIZE	CHEST		TO FIT CHEST		WAIST		BACK DROP		ARM LENGTH
	CHEST		TO FIT CHEST		WAIST		BACK DROP		ARM LENGTH
	cm	in	cm	in	cm	in	cm	in	cm	in
XSMALL	71	28	71-79	28-31	79	31	63	24	61	24
SMALL	74	29.5	81-87	32-34	80	31.5	65	25	62	24.5
MEDIUM	79	31	89-94	35-37	85	33.5	67	26	63	25
LARGE	85	33.5	97-102	38-40	91	36	69	27	64	25.5
XLARGE	91	36	104-107	41-42	97	38	71	28	65	26
XXLARGE	92	36.5	109-114	43-45	98	38.5	74	29	68	27

The table below shows the actual garment weights per size for each of the different styles of Factor 1 Plus base layer tops we manufacture. There is a tolerance of +/- 10g.

SIZE	LONG SLEEVE		SHORT SLEEVE		ZIP LONG SLEEVE		ZIP SHORT SLEEVE		VEST
	LONG SLEEVE		SHORT SLEEVE		ZIP LONG SLEEVE		ZIP SHORT SLEEVE		VEST
	g	oz	g	oz	g	oz	g	oz	g	oz
XSMALL	160	5.6	130	4.6	-	-	-	-	-	-
SMALL	175	6.2	140	4.9	185	6.5	155	5.5	-	-
MEDIUM	190	6.7	160	5.6	200	7.1	175	6.2	120	4.2
LARGE	210	7.4	175	6.2	220	7.8	190	6.7	135	4.8
XLARGE	230	8.1	185	6.4	240	8.5	210	7.4	150	5.3
XXLARGE	240	8.5	205	7.2	-	-	-	-	-	-

Size xsmall small medium large xlarge xxlarge

Color white black navy

Pickup available at Sub Zero Warehouse

Usually ready in 24 hours

Factor 1 Plus Mens Short Sleeve Base Layer Tops help protect your core without being restrictive on your arms.

Manufactured from super soft 100% polyamide fabric, these base layer tops utilise body mapping technology to construct innovative seamless body forms, enabling features such as stretch rib zones for support and waffle zones for enhanced heat retention and greater perspiration control.

The set-in sleeves provide a much more tailored fit in the armpits, maximising insulation and moisture transportation (wicking), with the integrated low profile cufff finishing just above the elbow. Body lengths in all our base layer and mid layer designs are long, giving the wearer a decent amount of fabric to tuck in to their trousers. This helps to avoid lower back exposure during activities and when sitting down.

These Sub Zero tops are one of the best lightweight thermal underwear ranges for general outdoor use. The multi-functional design makes them compatible with most active sports where you need excellent moisture management in cooler weather. They cross over in to anything from cycling through to mountain marathons, and can be used in combination with the Sub Zero Factor 2 thermal mid layer range for extra warmth in extreme conditions.

Discover Factor 1 Plus

Explore the comfort, durability and easy-care benefits of our British-made Factor 1 Plus thermal base layers.

EXPLORE THE BENEFITS

Advanced Moisture Management: Hydrophilic treatment rapidly wicks sweat away to keep you dry and comfortable
Lightweight Fabric: Reduces bulk whilst retaining crucial warmth
Snug Athletic Fit: Dual stretch allows freedom of movement without excess fabric
Thermal Performance: Provides excellent insulation during low temperatures.
Soft Touch Feel: Gentle against the skin for all-day wear
Durable Construction: Built to endure repeated use in rugged environments
Body Mapping Technology: Innovative seamless construction zones
Low Profile Neck: Reduces pressure and enables discreet use under work clothes
Low Profile Cuff: Sits snugly on the bicep/tricep without being restrictive.
Long Body Lengths: Prevents lower back exposure during activities
Easy Care: Machine washable and fast-drying
Made in the UK: Proudly designed and manufactured to the highest standards

Brand: Sub Zero
SKU: SZMF1PSS
TOG: 0.47
Fabric: 100% Polyamide
Average weight: 150g / 5.3oz (exact size weights found in the Size Chart section)
Fit: Snug
Layer: First - next to the skin
Size availability: XSmall-XXLarge
Colour: Black, White, Navy
Fabric treatments: Hydrophilic wicking management
Made in: Great Britain

Base Layer Washing and Cleaning Guide

Washing instructions for Sub Zero base layers are printed on a white silk tag stitched to the back neck and can also be found knitted in to the waist band. Please follow these instructions carefully as failure to comply with them will make your guarantee void. If you have removed the tag or are unsure of the washing symbol meaning, the full washing instructions can be found below.

Machine wash or hand wash in water not exceeding 40°C or 105°F
You can use a mild washing detergent but ideally you want to use a base layer specific washing treatment
Wash dark colours separately, do not bleach, do not use fabric conditioners
These base layers can be spun dry in a washing machine
Do not tumble dry. These base layers will quickly dry on a line or airer as they retain very little water once spun/rung out.
Do not dry clean
Regular ironing may be performed at a low setting (110°C, 230°F) only, but we advise against it.

GENERAL WASHING TIPS
When you go to wash any garment with a zip, ensure it is done up fully otherwise the exposed teeth may cause harm in the wash cycle. The same can be said for garments containing Velcro. Your best course of action would be to wash these garments either by hand or on their own in a washing machine.

With the advancement in detergent technology, you very rarely need to wash any garments these days above 30°C. It is better to use a specific anti-bacterial wash-in treatment rather than increasing the temperature.

A lot of Sub zero products, especially the base layers and mid layers, can be ironed on a low temperature setting. We would advise against this as the heat settings on irons are not always reliable. In any case, the stretch properties of synthetics helps reduce creases in the wash and if there are any afterwards, they often drop out when worn.

Like most synthetics, Sub Zero fabrics will melt or burn if exposed to flame or direct heat. They are not flame resistant; do not use them near ANY direct source of heat or flame. This includes some of our merino wool products that contain a small percentage of synthetic yarn.

We offer UK and international delivery, with shipping options and costs shown at checkout.

For more detailed information regarding our shipping process please visit our comprehensive Shipping Page