Northern Diver Delta Flex Semi-Tech Wetsuit

The new Delta-Flex 'Semi Tech' Semi-Dry wetsuit, features all the unique qualities of our original Semi-Tech but now has updated graphics and a great new look.

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Product Description



  • Complete 3 Piece Neoprene Semi-Dry Wetsuit System
  • 5.5mm Long John - Ti-Ax® Thermacote® Titanium Lining
  • Full Length Rear Entry Zip with Smooth-Skin Flush-Guard
  • Unique Integrated Heat Retaining 'Thermal Shield' Vest
  • 6.5mm Neoprene Shortie - Ti-Ax® Titanium Terry Lining
  • Front Entry Zip with Full Length Smooth-Skin Seal
  • All Seams Triple-Glued and Blind-Stitched for Security
  • Single Lined Smooth-Skin Neoprene Ankle/Wrist Seals
  • Zip Fastening Ankle and Wrist Over-Seal Warmers
  • Shortie Can be Worn Over the Long John for Colder Waters
  • Includes Super-Stretch 5mm Neoprene Air Vent Hood
  • Available in 5 Gents Sizes and 4 Ladies Sizes


This 2nd Generation Semi-Tech wetsuit still has all the hard-wearing properties of our original 'Semi-Tech', which does not reduce its fantastic flexibility, due to our unique Super-Stretch DFN-Ultragrade™ Neoprene material.

The new Semi Tech also features the same internal lining, providing extra warmth, insulation and comfort, due to our unique Ti-Ax® Thermacote® Titanium 'Terry' lining, and still incorporates an additional anti-bacterial coating.

As with all Northern Diver drysuits and wetsuits, the quality is exactly what divers have come to expect, from the UK’s leading dive equipment manufacturer, with heavy duty triple-glued & blind-stitched seams and the best quality Neoprene.

Just like our original Semi-Tech semi dry wetsuit, this new edition has been carefully designed, to allow for individual size proportions and should fit just about everyone.

Again, achieved through manufacturing five individual gents and four individual ladies sizes and in separate gents and ladies wetsuit patterns, the pre-formed 'shaped' arm/leg sections and the unique ergonomic cut of this semi-dry suit, provides maximum comfort and the ultimate diving flexibility.

This new three piece Semi-Tech semi dry wetsuit package is still manufactured from a mixture of 5.5mm, 6mm and 6.5mm unique Super-Stretch Neoprene, providing an average of 5.5mm thickness for the one piece long john suit (can also be used as a standard one-piece wetsuit) for cool water, an average thickness of 6mm for the shortie (can also be used as a shortie wetsuit) for warmer waters and also includes an additional 5mm Neoprene hood, for the ultimate semi-dry wetsuit package, that some scuba divers reportedly use all year round, in even single figure water temperatures.

Additional Information

Additional Information

Manufacturer Northern Diver
Category Wetsuits


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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 €125 qualify for free delivery. - Use coupon Code freeshipping at the checkout to apply this. Cylinders, and special promotions do not qualify for this discount.