Technical Base Layer


Northern Diver's two-piece technical Base Layer is designed to ensure you stay comfortable in even the most demanding conditions, and it can be worn under any drysuit. The snug-fitting suit has outstanding moisture wicking properties, keeping your body temperature regulated. In warmer climates the Base Layer's fabric draws perspiration away from the skin's surface, keeping you dry and comfortable. In cooler climates these same moisture wicking properties help maintain skin temperature - ke...

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  • Breathable
  • Moisture wicking
  • Ergonomic design
  • Lightweight and durable
  • Foot stirrups to keep long johns in place
  • Thumb stirrups for use when fitting wrists through drysuit wrist seals
  • Helps maintain core body temperature
  • Can be worn on its own or layered up with other undersuits
  • Machine washable

Delivery, Returns & Instore Collection

When will I receive my order?

International Delivery Times

Monday – Friday 3 – 5 Working Days

UK Mainland Delivery Times

Monday – Friday before 2pm Next Working Day
Monday – Friday after 2pm 2 Working Days
Saturday & Sunday 2 Working Days

UK Extended Areas Delivery Times

Monday – Sunday 3 – 5 Working Days

Please note delivery times may be extended during busy periods.

EU Areas

Please note that due to changes by HMRC, orders being shipped to EU countries will not be shipped on the same day as they are invoiced. EU Orders will now be shipped on the next working day. This only applies to E.U. orders. Domestic and Worldwide shipments remain the same.

Collect In Store?

When you go to the online checkout, you can opt to collect your items in store. We'll let you know when your order is ready for you to collect. Your order will normally be ready to collect the next working day.

Returns, refunds or exchanges?

You can return any item within 28 days of receipt for a refund, provided the item is unused, in its original packaging and in 'as new' condition.

Items will be refunded in full (less postage) if received within 28 days from the date of despatch.


We aim to deal with all returns and exchanges on the day they arrive, however please allow longer during peak periods.

You can return the item(s) by dropping them off in store or by returning the item(s) by post. We do not insist on a specific courier service for the return, so please use the most economical or appropriate method for returning the item(s).

Northern Diver (Int) Ltd
Appley Lane North
Appley Bridge

If an item becomes faulty after a period of time then please contact customer services (01257 254 444 or prior to returning the item. We will either repair or replace the item at our discretion.

Tell Us What You Think

Customer Reviews

5 out of 5 Stars (2 reviews)

Write a Review

Firefighter / SRT Instructor

By Mick Dunn on 25 Apr. 2019

This is a must-have if you are a fan of the layered system for thermal protection. I wear this close to the skin for maximum effect wether it be under an undersuit in the water or for extra warmth in other tech rescue situations. The cost is also a bonus. Great piece of kit.

Recently purchased ND Technical Base Layer

By Ian Parris (via Trustpilot Sept '23) on 11 Sep. 2023

Recently purchased ND Technical Base Layer, first chance today, to use in anger, under my trilaminate drysuit. Water temperature between 17 & 21C, air temperature at end of second dive 28C. Used this base layer with my Lavacore top, using this combination allowed me to drop 2kG in weight carried, compared to my normal under-suit. Felt far more comfortable kitting up and between dives. It certainly did wick perspiration away from my body, which kept me warmer. Very pleased and consider, good value for money, will try under my normal under-suit in colder conditions.


Trade Customers

Northern Diver offers trade accounts to commercial organisations and to those who work in or around water. Please click here to register your details and find out if you qualify. Once your trade account has been confirmed you can view all trade prices and shop easily online when logged into your account. Please note when you are not logged in to your trade account retail prices are shown. If you have any queries please do not hesitate to contact us. Tel: +44 (0) 1257 25 44 44.