Northern Diver Thermicore 3 Piece Undersuit

The all-new Thermicore 3-piece undersuit provides fantastic thermal protection, above or below the surface.

Availability: Out of stock

Northern Diver

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Free delivery on orders over €100 in Ireland via Fastway.

No hassle returns within 2 weeks of transaction.

Expert Advice from a team with over 60 years diving experience between them.

Product Description



  • Close and comfortable fit with super-soft interior lining
  • Manufactured from fleece
  • Flatlock seams with additional 3-needle stitching around the neck, wrists and ankles
  • Foot and thumb stirrups
  • Supplied with drawstring carry bag

The Thermicore 3-piece system is comprised of three thermal garments: a top, bottoms and socks. Each garment fits closely to the body to maximize its thermal performance and ensure that you remain comfortable when diving. 

The Thermicore is manufactured from super-soft fleece and the seams are flatlock stitched with additional 3-needle stitching around the neck, wrists and ankles. This exceptional build quality ensures that this 3-piece will provide you with years of protection from the cold. The collar is made from super-soft fleece, just like the interior lining, to add to the high comfort factor of this thermal undersuit. To keep your feet comfortable when diving, the seams on the socks are low-profile.                                  

To keep your undersuit in tune with the movements of your drysuit while stepping over objects and performing diving processes such as finning, the Thermicore bottoms feature foot stirrups and an adjustable waistband that is secured by tying the cord at the front. The tapered arms both incorporate an elastic thumb stirrup at the end. The stirrups make the process of putting on your drysuit seal as simple and swift as possible whilst ensuring that the arms of your undersuit don’t bunch up. 

With all-new Northern Diver and Thermicore logos and a red stitch detailed finish, this sleek and stylish 3 piece undersuit looks great worn above the surface between dives. 

To top it off, the Thermicore comes in its own attractive drawstring carry bag with logo and mesh detailing. 

For protection to the core, dive Thermicore.

Additional Information

Additional Information

Manufacturer Northern Diver
Category Undersuits


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Delivery Information

Shipping & Delivery

Shipping is fulfilled by Fastway couriers, and only within the Republic of Ireland and Northern Ireland. Generally orders received before 12pm will be shipped on the same day, and shipping will be fulfilled within 1-7 working days depending on stock availability, unless you are advised otherwise. This may be affected by busy periods of year. Flagship Scuba operates from Tuesday - Saturday during the week, and orders will only be fulfilled within this time. 

Your item will be registered with Fastway Couriers and will require a signature on delivery. 

Should an item ordered be unavailable for any reason you will be notified and refunded as soon as it is brought to our attention. 

Below is a breakdown of delivery costs:

  • Under 1kg - €8
  • 1kg - 25kg - €12
  • Price per 25kg thereafter - €12
  • Orders over €100 qualify for free delivery. - Use coupon Code freeshipping at the checkout to apply this. Cylinders, and special promotions do not qualify for this discount.