Christmas Sale Today's Sale Items
Same Day Dispatch Ends In
Delivery to UK Mainland from £2.50
  • PayPal
  • Visa
  • Mastercard
14 Day Refunds & Return Policy

Metalux Arctic 300g Undersuit


The Metalux® Arctic 300g is the thickest undersuit variant in the Metalux® family and is suited to more extreme diving conditions and/or drysuits without thermal properties.  Metalux® is one of the most lightweight, high-performance insulating materials available. It's designed to reflect thermal radiation and reduce air movement, even when wet or compressed. It retains its thermal integrity throughout the life of the garment, which is hard-wearing and machine washable. The undersuit is...

Read More


  • Lightweight
  • Fleece-lined
  • Quick-drying design
  • Zipped chest pocket
  • Bacteria and fungus resistant
  • Pockets on hips
  • Elastic foot stirrups
  • Two way YKK® zip
  • Tog rating: 4.4

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 (1 reviews)

Write a Review

Just perfect Unsersuit

By Steven Taksar on 03 Nov. 2017

I bought a used Vortex V2 Drysuit in Germany and searched for a suitable underside suite for the cold season. Since I am convinced of the quality of Northern Diver, I ordered the Metalux Arctic 300g Undersuite online here. The shipping went fast and smooth, so I could try it right away. I was surprised how well he suited me and how perfectly I slipped it into the Drysuite. I think the included bag is great, which makes it easy to transport and pack quickly. He is really very comfortable and you have a good freedom of movement. When diving, he felt very good and kept me for 80 minutes in 5 degrees cold water really warm. I am very satisfied with the undersuit and can only recommend it. Thank you for this great product.


Breathable Fabric Technology

Breathable Fabric Technology

Breathable fabric technology.

Lightweight Fabric Technology

Lightweight Fabric Technology

Lightweight fabric technology.



Microfibre material wicks moisture.

Unisex Sizes

Unisex Sizes

This suit is available in unisex sizes. Look at the documents tab to view our size charts and measuring guide.

YKK® Aquaseal® Zips

YKK® Aquaseal® Zips

YKK® AQUASEAL® zippers are perfect for diving. This zip has been designed to be flexible and smooth, offering optimum protection with a film-coated tape and an innovative zipper element mechanism. Keeping the water out and you dry.


Trade Customers

Northern Diver offers trade accounts. 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.