Aqua Lung

Aqua Lung Thermal Fusion Undergarment

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RRP £407.00
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Deep Blue Dive Free Delivery

The Aqua Lung Thermal Fusion is a unisex diving undergarment which maximises warmth and provides great fit and flexibility. This drysuit is designed for divers who are looking for a high level of comfort and warmth.

Deep Blue Dive Free Delivery

The Aqua Lung Thermal Fusion is a unisex diving undergarment which maximises warmth and provides great fit and flexibility. This drysuit is designed for divers who are looking for a high level of comfort and warmth.

Aqua Lung Thermal Fusion Undergarment

The Aqua Lung Thermal Fusion is a unisex diving undergarment which maximises warmth and provides great fit and flexibility. This drysuit is designed for divers who are looking for a high level of comfort and warmth.

The Thermal Fusion has been tested in many different water environment as Aqua Lung believe in testing drysuits for all different situation. The skin and core temperature are protected with this undergarment, the tests and science prove that the Thermal Fusion performed best overall in preventing heat loss in extreme environments compared to competitors.

The patent pending Thermal Core Technology is a unique, dual layer design, that allows the diver an unlimited range of motion, with a streamlined fit. The first layer, a comfort cut thermal core constructed of Polartec 200 fleece, delivers superior warmth. The second, outer layer, is a Polartec Power Stretch Pro compression skin which streamlines the inner core to the diver’s body, provides a custom fit, and allows maximum range of motion.

Key Benefits

  • Insulation - The Aqua Lung Thermal Fusion keeps the skin and core temperature protected and warm, this insulation is important for a undersuit as it is important that divers keep warm.
  • Unisex Undergarment - This drysuit is a unisex drysuit which means that it is suitable for both male and female. This is a great benefit as this suit is suitable for any diver looking for extra warmth.
  • Maximises Warmth - This undergarment purpose is to keep the divers body warmer when in cold water conditions. Cold water can make a dive more difficult, so a undergarment drysuit is a great solution.
  • Flexibility - The Aqua Lung Thermal Fusion still allows divers to move freely compared to other undergarment. This drysuit is flexible and allows movement.
  • Well Tested - This drysuit has been tested in different water environment to ensure that this drysuit can keep divers warm when in cold water conditions.
  • Dual Layer Design - The Aqua Lung Thermal Fusion drysuit has different layers to ensure that this drysuit does its job and keeps divers warm in cold conditions.

Who is Aqua Lung Thermal Fusion Undergarment for?

The Aqua Lung Thermal Fusion Undergarment is for divers who want a high quality undersuit which can be worn under another drysuit. So if you want an undergarment which can keep you warm whilst diving then this is the undersuit for you. The Aqua Lung Thermal Fusion can give you protection from the cold and keep you dry, using this suit to dive deep into the ocean would give you an incredible amount of comfort and is long lasting thanks to the great material used. This is a unisex undergarment so this is perfect for any diver going on a cold water diving adventure.

Who are Aqua Lung?

Aqua Lung introduced the world to Scuba diving equipment more than 60 years ago. Aqua Lung manufacture good quality Scuba diving equipment including regulators, masks and high performance torches. They pride themselves in making diving equipment which allows divers to explore the ocean safely and make memorable moments.

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We will take every effort to get you goods to you as efficiently and effectively as possible. All orders placed before 3pm will be shipped on the day of ordering subject to payment authorization and item availability.

Any items which are out of stock will be shipped as soon as they become available. If this causes a delay in your delivery, you will be notified and your order dispatched as soon as possible. If any items are unavailable, you will be contacted and offered a replacement or refund.

UK Delivery

If your order total is under £45 then you can choose one of the following options. Please take note of the availability on the product page and your confirmation email - if the availability is not 'In Stock' then the order will be shipped according to your delivery preference once it arrives into stock. For example if the availability is 'Ships in 3-5 Days' because it isn't in stock and has to come from Italy, and you've chosen 'DPD Next Day Delivery' then the item will take 3-5 working days and then be shipped on a next day delivery.

  • Standard Delivery - £3.95 (1-3 Working Days)
  • 24 Hour Delivery - £4.95
  • DPD Next Day - £5.95 (Guaranteed Next Working Day + 1 Hour Delivery Window)

If your order total is over £45 then you can choose

  • Standard Delivery - FREE
  • 24 Hour Delivery - £4.95
  • DPD Next Day - £5.95

Please be aware that the prices above are for areas classed as "UK Mainland" by DPD which does NOT include offshore islands, Scottish highlands or Northern Ireland.

Non-UK Delivery

Our website has a comprehensive postage system which takes into account the weight of your delivery and the destination address - to get a quote for your order please add the products you'd like to buy to your basket, go to the basket page and fill in the "Estimate Shipping & Tax" section to get the price.

BFPO Addresses

This shipping method is available for British Forces Posted Overseas and addresses only. Shipping is as with all other UK mailing but please check to see that the size and weight of your order does not exceed maximums for your BFPO destination number by checking with the BFPO website.

Please note that once we have shipped the item and handed over to the BFPO service we have fulfilled our contract and delivery responsibility. All queries and problems with delivery must be taken up by yourself with BFPO and any claims must be handled between yourself and them.

Restricted Products

Please be aware that some products have restrictions on which countries we can send them to. Please enquire ahead of time if you require an order dispatched outside the EU and we can advise.

VAT Exempt

If this applies to you, the price you will pay for the goods will automatically be adjusted to remove the VAT element - you MUST choose the correct country on checkout for this to apply. We CANNOT refund the VAT once the order is completed.

You can also avoid paying VAT if you are having your goods sent to you in the UK, but are taking the goods abroad permanently within 3 months of making the purchase. You will have to pay the VAT with your order and reclaim the tax per relevant regulations - please be advised we cannot help with this process.


We stock the vast majority of products listed on our website in our Whitley Bay superstore and warehouse and these products are available for same day dispatch & next day delivery.

Due to the huge quantity of products we stock, we offer the ability to backorder products which have gone out of stock and less popular products which we don't carry stock of.

Depending on the brand these backorder products can take anywhere between 1 and 10 days to arrive into stock. We estimate 3-5 working days on average but please be aware that products from Mares and Scubapro are shipped from Italy & Germany respectively so can take a little longer.

As always if you aren't sure or want a more accurate estimate just give our team a call or email!


You can return any product that is in an UNOPENED, RE-SALEABLE condition within 30 days as long as it is not marked as clearance. Please contact us before doing this so we can confirm this ahead of time - we recommend using a recorded delivery service for any returns as you will be responsible for ensuring it reaches us.

Please get in touch to confirm a return by email or phone before sending anything back. When sending a return it is important that you include:

  • Your order number
  • Your name & a contact telephone number
  • The reason for return

We will try and get your return processed as quickly as possible but if you don't send this information it can delay the return.


If you have ordered something and it doesn't fit then we can exchange for a more suitable size, stock permitting, but you will have to pay the return postage.


Our customers have the right to cancel their orders within 14 days unless their order has been dispatched. After the order has been dispatched, it is the customers responsibility to return the item in a saleable condition and receieve either a full or partial refund.

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