The design of these mid layer thermals is very similar to the Factor 1 in that they are manufactured from tubular fabric. The difference is that this fabric can be knitted on a wider variety of machine widths so we can produce garments without side seams in varying chest diameters. These thermal mid layers can either be worn over a base layer or next to the skin. They are designed to be snug fitting.

Xsmall Small Medium Large XLarge XXLarge
Chest Inches 24-27 28-31 32-35 36-38 39-41 41-44
Chest cm 61-69 71-79 81-89 91-97 99-104 104-112
Sleeve length inches 21 22 23.5 24 26 28
Sleeve length cm 54 56 60 61 66 71
Back drop inches 25 26 27 29 30 32
Back drop cm 64 66 69 74 76 81
Waist inches 26-28 29-31 32-34 35-37 38-40 41-42
Waist cm 66-71 74-79 81-87 89-94 97-102 104-107
Inside leg inches 26 27 28 29 30 31
Inside leg cm 66 69 71 74 76 79
Womens UK size 6 8 10-12 14 16-18 20
Womens European size 34 36 38-40 42 44-46 48

Sub Zero Mens Meraklon Thermal Mid Layer Leggings


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Sub Zero Mens Meraklon Thermal Mid Layer Leggings (with fly) are snug fitting with plenty of stretch (60% along the width, 40% along the length) which makes them feel as comfortable as a second skin and allows for a close comfortable fit for most body shapes. The in-built stretch also allows base layers to be worn underneath the Meraklon mid layers without being restrictive.

These mens thermal mid layer leggings have a double thickness fabric fly opening, providing extra thermal protection without the need for a zip. The high rise back will prevent any cold spots during activity and the low profile waist band will not cause bulk rub when combined with other mid layers or base layers. Double thickness fabric is also used on the cuffs, insulating your ankles from droughts.

Perfect for colder days where a base layer is just not warm enough on your commute, cycling, running or walking the dog, these thermal mid layer leggings offer an uncomplicated design with hypoallergenic properties.


Made in: England

Sun protection factor: 50+

TOG rating: 0.60

Fabric: 100% Polypropylene

Average weight: 280g / 9.9oz

Fit: Mens snug

Layer: First layer next to the skin, or a mid layer over a base layer

Size availability: XSmall-2XLarge

Colours: Black, White, Navy

Fabric treatments: None

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


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