Home Shop Drysuits & Undergarments Fourth Element J2 Baselayer Undergarment

Fourth Element J2 Baselayer Undergarment

Fourth Element J2 Baselayer Undergarment

4.9 from 1100+ reviews

$190.00

  • Free shipping on orders over $150
  • Local pickup available at Bondi store
  • 30-day returns on unused items

GenderMens

MensWomens

CutTop

TopLeggings

SizeS

XXSXSSMLXL2XL3XL
  • The layer that actually keeps you warm — not the shell
  • Loft matched to Sydney winter and to your suit
  • Heated options for long or deep dives
  • Fitted with your drysuit so nothing bunches or binds
Description

Baselayer protection for extended range diving. Developed using antimicrobial silver ion treatments, this fabric was tested in the extreme environments of the J2 cave system, one of the deepest in the world. It is stretchy, warm, and won't let you down.

A simple, close fitting design with flat seams for next to skin comfort offers the perfect solution under any drysuit underwear. This top is not only easy to don, it has good aesthetics and is extremely comfortable thanks to excellent all-way stretch fabric and flat seams.

Shipping
Free shipping on orders over $150. Local pickup available at Bondi Beach. International shipping calculated at checkout.
Returns
30-day return policy on unused items in original packaging. Custom-fitted gear is non-returnable.
Fourth Element J2 Baselayer Undergarment

Your drysuit doesn't keep you warm — this does

A drysuit is a shell. What keeps you warm is the loft underneath it, and getting that layer right is the difference between enjoying a winter dive and counting down the minutes.

We stock the Santi and Fourth Element ranges we dive ourselves, from merino base layers through to heated systems for long decompression and rebreather dives. Thicker is not automatically better — an undergarment that's too bulky compresses, kills your fit and drives your weighting up.

Come in with your suit and we'll match it properly. It's a five-minute conversation that saves a lot of cold diving.

Our Client reviews

Hear from customers who have shopped with us.

4.9

Based on 1100+ reviews

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Frequently Asked Questions

Find answers to common questions about our gear, courses, and policies.

Which drysuits can I buy off the shelf?

The Avatar Airon and the Bare Aquatrek Evo are our off-the-shelf suits — you can be diving one straight away.

How long does a made-to-measure suit take?

It depends on the brand. Navyfel is about 4 weeks, Bare about 8, Santi 8 to 10, and Fourth Element around 16. If you have a trip booked, work backwards from that date and come and talk to us early.

Which drysuit should I go for?

It depends on the diving you want to do — cave, cold water and travel all pull in different directions on material, seals and pockets. Tell us what you want to use it for and we will tell you honestly which suit fits that.

Does the suit itself keep me warm?

No — the undergarment does. The suit is a shell that keeps water out; the loft underneath is what holds the heat. Getting that layer right matters as much as the suit, and bulkier is not automatically warmer.

Fast delivery and convenient online shop

Modern technologies and materials

Comfortable to use anytime

Flexible return policy and warranty