Northern Diver Thermalux undersuit, front and back views
Diver wearing a Thermalux undersuit while kitting up
Thermalux undersuit features: thumb loops, stirrups and stretch panels
Thermalux undersuit drawstring carry bag
Thermalux undersuit size chart
Northern Diver Thermalux undersuit, front and back views
Diver wearing a Thermalux undersuit while kitting up
Thermalux undersuit features: thumb loops, stirrups and stretch panels
Thermalux undersuit drawstring carry bag
Thermalux undersuit size chart

Northern Diver Thermalux Undersuit

£115.50

A lightweight three-layer drysuit undersuit from Northern Diver, with a tough 40D nylon outer, 200gsm thermal insulation and a soft wicking microfleece lining. Lycra stretch panels and foot stirrups keep it comfortable and in place all dive.

Size:

A lightweight three-layer drysuit undersuit from Northern Diver, with a tough 40D nylon outer, 200gsm thermal insulation and a soft wicking microfleece lining. Lycra stretch panels and foot stirrups keep it comfortable and in place all dive.

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Product Overview

The Thermalux is a lightweight drysuit undersuit from Northern Diver for recreational, technical, commercial and rescue diving. Its three-layer build keeps you warm without bulk, and stretch panels let you move freely in and out of the water.

Key Features

  • Three-layer construction: 40D nylon outer, 200gsm thermal insulation and moisture-wicking microfleece lining.

  • TOG rating of 2.3.

  • Lycra stretch panels at the shoulders, underarms, lower back, cuffs, lower legs and ankles.

  • Two-way front zip, twin hip pockets and a fleece-lined collar.

  • Elasticated cuff loops and foot stirrups stop the suit riding up.

  • Quick-drying and naturally resistant to bacteria and fungi.

Technical Specifications

  • Brand: Northern Diver.

  • Model: Thermalux Undersuit.

  • Insulation: 200gsm thermal polyester, TOG 2.3.

  • Sizes: XS, S, M, ML, MLR, L, LR, XL, XLR, XXL, XXLR, XXXL (R = regular-length fits).

What’s Included

  • One Northern Diver Thermalux undersuit in your chosen size.

  • Breathable drawstring carry bag with mesh panels.

Compatibility & Options

Designed to wear under Northern Diver neoprene and membrane drysuits, including the HID and Voyager.

Add Northern Diver base layers or Hotsox underneath for colder water.

Check the size chart in the photos before ordering.

Need Some Advice?

Contact us if you would like help choosing an undersuit size or warmth level. The Abyss Scuba School team can help you find the best fit for your diving.