You are here: Factor 1 > Factor 1 Long John Thermal Underwear Base Layer Leggings

Thermal underwear base layer snug fitting male leggings have plenty of stretch (100%) which makes them feel as comfortable as a second skin and allow for a close comfortable fit for most body shapes. The stretch, coupled with a high rise back will prevent exposure under active conditions, protecting your kidneys and lower back from discomfort and cold spots. The super efficient hydrophilic finish will wick perspiration away, leaving your skin feeling warm and dry.

These are excellent thermal underwear base layer leggings for men where a fly is required. Constructed out of double thickness fabric, the front flap provides extra thermal protection. These are suitable for all outdoor sports and can be used for anything from running through to rock climbing. For extreme temperature use in conjunction with the Factor 2 range of mid layer thermal underwear.

For a more detailed size chart please visit our technical information pages.

Manufactured in UK

Double gusset for added protection from the cold

Double fly pouch opening

Flat ankle seams to reduce boot pressure

Low profile elasticised waist

High rise back for kidney protection

Sun Protection Factor: 50+

TOG: 0.42

Fabric: 100% Polyamide

Average weight: 130g

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RRP £39.99

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