Delivery to UK Mainland from £2.50
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14 Day Refunds & Return Policy

OUTLET: 5.5/6.5mm Womens Semi Tech Delta Flex Semi Dry Wetsuit


Dive all year round in the anatomically designed Delta Flex Semi-Tech. Comprising a 5.5mm semi-dry steamer, 6.5mm shortie and a 5mm vented neoprene hood, the three-piece system gives excellent thermal protection in single-figure water temperatures. The two wetsuit garments can be worn independently, so you're covered for a warmer conditions too. Northern Diver's Ti-Ax® Thermacote® heat reflecting lining features in the steamer and shortie. The steamer also includes our Thermal Shield vest...

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  • Triple glued, blind stitched seams
  • Anatomical design with pre-formed knee and elbow areas
  • 5.5mm steamer with Thermal Shield vest and Ti-Ax® Thermacote®
  • 6.5mm shortie with Ti-Ax® Thermacote®
  • 5mm air vent neoprene hood
  • Available in five gents' and four ladies' sizes

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

4.8 out of 5 Stars (5 reviews)

Write a Review


By Karl on 09 Dec. 2016

Purchased this suit for an early season trip, in Spain. The flex fabric is extremely comfortable and soft, plus it fits very well. Integrated vest and arm/leg seals prevent water flush and suit is very warm. Wearing the jacket as well ensures comfort and warmth at depth and longer dive times. Extremely well made, with zips in the right places to aid fitting. A quality product, as expected from ND and comparable with many other more expensive suits.

Excellent Wetsuit

By Chris on 10 Nov. 2016

Bought this suit for my youngest son as he'd used it through his club during his training and we knew it was good. Since then he's used many times and always with no complaints even down to 11 degrees at Capernwray. Excellent value.

Very happy

By Andy on 14 Nov. 2016

For ease of reading I have segmented this review into 2 parts: one being the product itself and the other the services I have received from Northern Diver. Product. I purchased this suit earlier in the year (Jan 2012) and have dived regularly since then (through all sorts of weather) with no problems at all. The suit is well made, sturdy and fits like a glove. Being someone who is no longer a slim racing snake, the material lives up to its claim of being super-stretch neoprene. The combination of the integral vest with its neck seal and the adjustable external front neck seal ensures that there is no sudden gush of cold water. However, the water that does enter the suit soon forms a warmth barrier, so much so that I can`t really say I have had a cold dive in this suit. The cuff and ankle seals with zips certainly minimize, if not almost remove, water flushing to the extent that I have yet to notice any flushing at all. I have had no need to use the hood due to having an “old trusty”, so I can`t comment on this, but have no reason to doubt its suitability for the job. Services. As already stated, I am no longer a slim racing snake, so I had to return the suit for adjustments. This was completed in a relatively short period of time and the suit was returned with correct length for arms and legs. All communication, prior to, during and after the purchase, with ND was swift, courteous and helpful. All in all, I am more than happy with this suit and am seriously considering purchasing a second one to give me more flexibility.

Excellent Value Buy for a New Diver

By Philip Vaughan on 15 Sep. 2016

Bought this wetsuit at LIDS and I've got to say it's extraordinarily good value. A really well made wetsuit with a thick (6mm) neoprene shortie and hood that keeps you really warm (in 5 degree water..!). I tried on other wetsuits at the show, but the others fitted less well and were far more money - For a newbie like me, this was the perfect first wetsuit. A number of other trainees in my club also bought this wetsuit both last year and this. Makes us all look a bit "line dancers" when out together, but so what - keeps you warm and is excellent value..! I also got great customer service from Northern Diver - the long suit had a tear in rubber seal on the leg - as soon as I sent the receipt details to them, they arranged to pick up the torn one and send a replacement straight away, just in time for my first open water dive..! They also threw in a few freebie gifts, by way of apology - Fantastic customer service..!

No Regrets

By Pete on 26 Sep. 2016

Bought this semi-dry suit for UK diving and to date, it has proved to be very warm. The suit fits really well despite some worries on the first try, found it stretches really well and doesn't hamper movement. Took the one piece part to the Med and again found it to be ideal. Will probably take the shorty part to red sea next time. Marvellous suit that covers all my needs. Wish 1 had spotted this one before 1 bought my other 5mm wetsuit..


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.