BO & T1 EARLY ACCESS

NAUTIKOS GORE-TEX® TROUSER

ThruDark x Musto

£1,200

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	Waist	Inside Leg - R	Inside Leg - L	Hip
XS	28	32	34	35
S	30	32	34	37
M	32	32	34	39
L	34	32	34	41
XL	36	32	34	43
XXL	38	32	34	45
3XL	40	32	34	47

Size	Waist	Inside Leg - R	Inside Leg - L	Hip
XS	72	82	87	90
S	77	82	87	95
M	82	82	87	100
L	87	82	87	105
XL	92	82	87	110
XXL	97	82	87	115
3XL	102	82	87	120

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

Use our guide.

$NAUTIKOS GORE-TEX® TROUSER$ $NAUTIKOS GORE-TEX® TROUSER$

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 | Waist

Measure around your natural waistline at the narrowest part of your torso. Keep the tape level and do not pull it too tight.

B | Hips

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

C | Inseam

Stand upright and measure from your crotch down the inside of your leg to the top of your ankle bone.

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Locked to BO & T1 GoDark members. Available to all GoDark in
Earn 1200 GoDark points when you purchase this product
Free shipping on all orders over £175
Free exchanges and easy returns
5 Year Warranty & lifetime repairs

Shop the Range

NAUTIKOS TRIDENT GORE-TEX® MID LAYER JACKET

NAUTIKOS TRIDENT GORE-TEX® MID LAYER TROUSER

COMPLETE THE KIT

nautikos cap

Obsidian Black

£100

nautikos storm fleece

Carbon Grey

£225

nautikos t-shirt

Obsidian Black

£70

GORE-TEX Pro™ delivers maximum waterproof protection in the harshest conditions.

Modular pocket system transfers from jacket to trousers.

Dyneema® construction delivers exceptional strength at minimal weight.

1 /3

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

FEATURES

$Dyneema® Reinforced Seat$

Dyneema® Reinforced Seat

The seat takes the most friction when you sit on or slide across surfaces. Dyneema® reinforcement, one of the world's strongest fibres by weight, protects the fabric and extends garment life.

$Adjustable Ankle Cuffs$

Adjustable Ankle Cuffs

Seal the trouser hem around the ankle to block out wind, water, and debris on the trail. Compatible with boots and gaiters for a layered, gap-free lower body system.

$Adjustable Webbing Strap$

Adjustable Webbing Strap

Webbing straps with a buckle and a slider adjust the fit at the side of the bib. A triangular loop clips on to secure items, with a thigh cargo pocket sitting just below.

$Reflective Logo$

Reflective Logo

A reflective tonal print logo that stays discreet in daylight. In headlights or torchlight it lights up, making the wearer easier to see in the dark.

$Centre Front Zip$

Centre Front Zip

A large, chunky-toothed zip runs down the centre front of the bib, with a storm flap covering one side. The pull tab sits on a cord loop for easy grip.

$D3O Impact Protection$

D3O Impact Protection

A shock-absorbing material that stays soft and flexible in normal wear but hardens instantly on impact to disperse force away from the joint. Low-profile knee protection against knocks and falls.

$Grab Handle$

Grab Handle

A grab handle on the back of the trousers gives a secure point to grip.

$D-Rings$

D-Rings

D-rings on the trousers provide fixed attachment points. Clip on kit or accessories so they stay attached to the garment and within reach.

$Adjustable Shoulder Straps$

Adjustable Shoulder Straps

Adjustable shoulder straps let you set the fit of the bib-style trousers. They carry the weight on your shoulders, keeping the trousers comfortable and in place.

$Large Thigh Cargo Pocket$

Large Thigh Cargo Pocket

A large thigh cargo pocket closes with a secure flap. The roomy opening makes it easy to reach in with one hand.

TECHNOLOGIES

YKK™
All ThruDark garments feature market-leading YKK™ zips, from VISLON® AquaGuard® to bespoke toggles. No compromise on details for premium quality.
Dyneema®
Fifteen times stronger than steel at half the weight of carbon fibre. Critical wear areas reinforced with Dyneema® for improved longevity.
$GORE-TEX™ PRO Ocean Technology$

GORE-TEX™ PRO Ocean Technology
A GORE-TEX™ PRO membrane tailored to keep salt water out, paired with a compactly woven, durable outer fabric. Windproof and breathable, it suits wet, exposed conditions on the water.

PERFORMANCE

Waterproofing

10/10

Breathability

7/10

Wind Resistance

10/10

Thermal Rating

2/10

Durability

8/10

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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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.*