NAUTIKOS TRIDENT GORE-TEX® MID LAYER JACKET

BO & T1 EARLY ACCESS

NAUTIKOS TRIDENT GORE-TEX® MID LAYER JACKET

ThruDark x Musto

£450

Fit:

Regular

Studio Model is 6ft 2" and wears size: L

Size & Fit

This size guide offers a reference for how your body measurements align with our gear. With each garment offering specific tailoring and fits, use this as a guideline for which size to select based off your body measurements.

Size	Chest	Waist	Hip
XS	36	28	35
S	38	30	37
M	40	32	39
L	42	34	41
XL	44	36	43
2XL	46	38	45
3XL	48	40	47

Size	Chest	Waist	Hip
XS	91	72	90
S	96	77	95
M	101	82	100
L	106	87	105
XL	111	92	110
2XL	116	97	115
3XL	121	102	120

Studio Model is 6ft 2" and wears size: L | Fit: Regular

Use our guide.

$NAUTIKOS TRIDENT GORE-TEX® MID LAYER JACKET$ $NAUTIKOS TRIDENT GORE-TEX® MID LAYER JACKET$

Use this guide to accurately measure your body before selecting your size. For the most precise fit, measure directly against your body using a soft tape measure, keeping it level and close fitting without pulling tight. Stand naturally and avoid measuring over bulky clothing. If you fall between sizes, consider how you prefer your garments to fit and the intended use of the product.

A | Chest

Measure the full circumference of your chest at the widest point, just under your armpits. Keep the tape level across your back.

B | Waist

Measure around your natural waistline at the narrowest part of your torso. Do not pull the tape too tight.

C | Hips

Measure around the fullest part of your low hips, keeping the tape level and parallel to the floor.

Only 16 left in stock! In stock. In stock. In stock. Only 20 left in stock! In stock.

Locked to BO & T1 GoDark members. Available to all GoDark in
Earn 450 GoDark points when you purchase this product
Free shipping on all orders over £175
Free exchanges and easy returns
5 Year Warranty & lifetime repairs

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NAUTIKOS TRIDENT GORE-TEX® MID LAYER TROUSER

COMPLETE THE KIT

nautikos trident gore-tex® mid layer trouser

Obsidian Black

£450

nautikos t-shirt

Obsidian Black

£70

Body-mapped thermal fleece optimises breathability and airflow.

Retains warmth at rest and releases heat under exertion.

GORE-TEX™ delivers waterproof, breathable protection.

Laminated reinforcement protects high-wear areas.

1 /4

ATTRIBUTES

Waterproof
Complete protection from heavy rain and wet conditions
Windproof
Blocks wind chill to maintain core warmth in exposed environments
Durable
Built to withstand harsh conditions and deliver long-lasting performance
Insulated
Traps warmth effectively to keep you comfortable in cold conditions

FEATURES

$Reinforced Elbows$

Reinforced Elbows

Reinforcement at the elbows adds durability and abrasion resistance to a high-wear point. Helps it cope with leaning on or rubbing against surfaces.

$Elasticated Cuffs$

Elasticated Cuffs

Elasticated hem and cuffs keep the layer snug to the body, maintaining warmth and comfort when worn under a hard shell or insulated jacket.

$Hook and Loop Sleeve Patches$

Hook and Loop Sleeve Patches

Modular attachment points on the sleeve for badges, ID patches, or personal insignia. Lets you personalise your kit or identify yourself in group settings without permanent modification.

$Hem Adjustment$

Hem Adjustment

Hem adjustment sits inside the pocket, so you can tighten the hem to seal in warmth and fine-tune fit. With the adjuster out of sight, there are no loose cords or toggles outside.

$Funnel Collar$

Funnel Collar

A close, high funnel collar that sits up around the neck and seals it in. It holds in warmth and blocks draughts, so cold air stays out.

$Body-Mapped Fleece Lining$

Body-Mapped Fleece Lining

Fleece is mapped in zones across the body, adding warmth where it is needed and leaving other areas lighter. Lighter zones help breathability and freedom of movement.

TECHNOLOGIES

YKK™ Vislon® Zips
YKK™ Vislon® Zips trusted worldwide for durability. Finished with Hypalon® zip pulls, a rugged synthetic rubber used in elite military marine craft as a nod to our heritage.
GORE-TEX®
Revolutionary waterproof membrane with over 9 billion pores per square inch, each 20,000x smaller than a water droplet, preventing rain penetration while maintaining comfort.

PERFORMANCE

Waterproofing

9/10

Breathability

6/10

Wind Resistance

9/10

Thermal Rating

6/10

Durability

7/10

BEYOND ENDURANCE

YEARS IN THE MAKING

As Royal Marines Commandos turned Special Boat Service Operators, ThruDark’s Co-founders spent their decades of military experience operating beneath dark skies and even darker waters.

By contrast, Musto’s story speaks to an aquatic excellence of Olympic origin, with founder Keith Musto a key proponent of redefining sailing in the 60s.

LEARN MORE

THRUDARK X MUSTO

Watch the launch video now.

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OBLIVION

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FAQS

Should you not be satisfied with your order, you have 30 days from the date of delivery to return it for an exchange, full refund, or gift voucher credit.
All exchanges are free using our returns portal. Please note that returns for a refund will have a shipping fee deducted: £5.00 for UK orders, and approximately £10.00 for international orders (depending on the country) to cover the cost of return postage.
Read our full returns policy here
At ThruDark we are constantly striving to deliver a better service to our customers. With Klarna we can now offer all UK and international customers Buy Now, Pay Later with Klarna using their pay in 3 instalments with 0% interest and no fees.
With Clearpay we can now offer UK, US, Australian and Canada customers to pay in 4 instalments interest-free over 6 weeks.

Please note: Klarna & Clearpay is unavailable for pre-order items.

Learn more on our partnership with Klarna & Clearpay
Mainland UK
Free standard delivery is available on orders of £175 or above.
Free next-day delivery is available on orders of £350 or above.
For orders below these thresholds, a range of delivery options is available at checkout.
Estimated timeframes are provided by the couriers and should be used as a guide only.
Channel Islands & UK Offshore
Delivery options for Guernsey, Jersey and the Isle of Man are shown at checkout, with timeframes provided as courier estimates.
Shipping Method Cut-off Times
Delivery estimates apply to orders placed before the cut-off times listed below.
Orders placed after the cut-off on Fridays will be dispatched on the next working day.
- Royal Mail Standard – 4:00 PM, Monday to Friday
- Royal Mail Express – 2:30 PM, Monday to Friday
- DHL Express – 2:00 PM, Monday to Friday
- FedEx – 2:00 PM, Monday to Friday
Additional Information
- Delivery timeframes are estimates only and may vary by location or during busy periods.
- All estimates refer to working days (Monday to Friday, excluding UK bank holidays).
- Next-day services may take 1–3 working days for Highlands and Northern Ireland.
- Order values are shown in GBP and will be converted to your local currency at checkout.
- Any additional delivery or customs charges are the responsibility of the customer.
- If Royal Mail is unable to deliver to a business address, it may be due to address accuracy, access issues, safety concerns, delivery holds, or local service disruptions. Please check for service updates or contact customer support if needed.
All international shipping amounts will be calculated at checkout.
Delivery times may vary depending on shipping location and during busier periods.
All estimates are based on working days, which are Monday to Friday, excluding UK bank holidays.
Next-day services are estimated at 1-3 days for Highlands and Northern Ireland.
International orders are shipped Delivered Duty Paid (DDP) with import duties and taxes covered — except orders to the United States, where taxes are calculated at checkout.
Please note: we do not reimburse any additional delivery or customs fees.
All amounts are based on GBP and are converted to your local currency at checkout.
We will not reimburse customers who pay any additional delivery or customs fees.
All international shipping amounts will be calculated at checkout
We provide tracking numbers on all orders once fulfilled and dispatched by our warehouse team. These can be used to follow the progress of your delivery and in some cases to change address or delivery details if required. Please see below for links to track and manage your parcel with our respective couriers:
- Royal Mail - https://www.royalmail.com/track-your-item
- DHL - https://www.dhl.com/gb-en/home/tracking.html?locale=true
*If you need to change the delivery address on your shipment please use the DHL app or manage the shipment online with Royal Mail. Unfortunately, our Support team is unable to amend shipping addresses or make any other changes to your order once placed.*