Children's Charts

Due to the size of these garments all of the bodies will have side seams.

2-3 3-4 5-6 7-8 9-10 11-12
Chest Inches 21-21.5 21.5-22.5 22.5-23 23-24.5 24.5-25.5 27-27.5
Chest cm 53-55 55-57 57-59 59-62 62-65 69-70
Sleeve length inches 12 13.5 15 17 19 21
Sleeve length cm 32 34 38 43 49 54
Back drop inches 15 16.5 18 19.5 21 23.5
Back drop cm 38 42 46 50 54 60

Sub Zero Factor 1 Plus Long Sleeve Seamless Childrens Base Layers


In Stock

(0 Reviews) Leave a review

select Colour

select Size

View Size Charts



Sub Zero Factor 1 Plus Unisex Long Sleeve Seamless Childrens Base Layers are manufactured from super soft 100% polyamide fabric produced on a seamless circular knitting machine. Utilising body mapping technology allows us to construct innovative seamless body forms and add features such as stretch rib zones for support and waffle zones for enhanced heat retention and greater perspiration control. The generous body length allows a decent amount of fabric to tuck in to trousers, helping to avoid lower back exposure during activities.

The only seams present on these base layer thermal tops are on the sleeves and the shoulders where they incorporate other design features. The set-in sleeves provide a much more tailored fit in the armpits, maximising insulation and moisture transportation (wicking), whilst the seam on the sleeve length allows the addition of a thumb hole near to the cuff. This allows the wearer to place further layers on top of the base layer without the sleeves riding up, and can also protect the palm of the hand from cold weather. The round neck has been designed so that it stretches when placed over your head and its low profile also means it is not prominent when worn under clothing.

Sub Zero Factor 1 Plus unisex long sleeve seamless childrens base layers are the ultimate in thermal underwear technology for kids and is suitable for all outdoor sports where extra warmth is required but without the bulk. They cross over in to anything from, skiing, through to hiking and camping, and can be used in combination with the Sub Zero Meraklon thermal childrens mid layer range for extra warmth in extreme conditions.


Made in: England

Sun protection factor: 50+

TOG: 0.47

Fabric: 100% Polyamide

Average weight: 120g / 4.2oz

Fit: Unisex snug

Layer: First - next to the skin

Size availability: Childrens Small-Large

Colour: Black and White

Fabric treatments: Hydrophilic impregnated

Washing instructions: 40°C wash with mild detergent, do not tumble dry, iron on low setting


This item currently has no reviews.


Postal costs are additional to the displayed product price unless part of a promotion or special offer. These prices will vary depending on the delivery service you select, the country of delivery and the quantity of goods ordered.

Our system automatically calculates this price from the orders final shipping weight. You can check the cost of shipping an item by adding it to your shopping basket.

Free delivery offers for orders over £25 only apply to UK Mainland orders and are not available for certain areas of the UK, including the highlands and the Channel Islands.

Free delivery offers are sent using Royal Mail Second Class post if under 4kg, or UPS if over 4kg.


If you are not completely satisfied with your purchase, simply return the item(s) to us in their original condition within 180 days of receipt along with a completed returns form that can be downloaded here. We will issue a refund for the item(s) on receipt.

If you would like to exchnage a product then pelase send it back to us with a completed retursn form and we will post the replacement out to you free of charge.

For Full Returns and Exchange conditions please click here.