Why You’ll Love the Quest Defier MK4 1 Man Bivvy GREEN

⚡ Quick & Effortless Setup

The Defier MK4 has been designed so you can be fishing in minutes. Thanks to its strong aluminium frame and intelligent quick-erect design, the bivvy can be fully set up in under a minute.

No complicated assembly. No wasted time. Just dependable shelter that’s ready whenever you are.

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🛏️ More Space. More Comfort.

The popular flat-back design has been carried over and refined, giving you maximum usable internal space without increasing the footprint.

With generous headroom and plenty of room for your bedchair, chair and luggage, the Defier MK4 feels incredibly spacious for a 1-man bivvy—ideal for both overnight sessions and longer stays.

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🌧️ Built for Every Season

Constructed from our premium 20,000HH Aeroshell™ Fully Breathable Blackout Fabric, the Defier MK4 is designed to keep you comfortable whatever the weather.

The breathable material helps reduce condensation, while the blackout finish keeps the bivvy cooler in summer, darker at sunrise and warmer during colder months.

Whether you’re fishing through heavy rain, bright sunshine or frosty mornings, the Defier MK4 is built to perform.

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💨 Improved Ventilation & Visibility

The MK4 introduces upgraded windows that can now be opened and closed from inside the bivvy using convenient two-way zips.

Combined with the rear ventilation system, this allows you to easily regulate airflow without stepping outside keeping you cooler on warm days while helping reduce condensation.

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👀 Adapt Your Shelter in Seconds

The fully zipped front panel can be removed in moments, transforming the Defier MK4 into an open-front shelter.

The large peak and letterbox opening allow you to keep an eye on your swim while remaining protected from unexpected showers.

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✅ Packed with Practical Features

Everything about the Defier MK4 has been designed with real anglers in mind.

✔ Heavy-duty zipped-in groundsheet keeps out mud, insects and unwanted wildlife.

✔ FREE Internal Vapour Shield (worth £39.99) included to further reduce condensation.

✔ Stronger upgraded pole system for even greater stability.

✔ Improved inside-opening windows with two-way zips.

✔ Large front peak with letterbox opening.

✔ Supplied with heavy-duty pegs and oversized carry bag.

✔ Compatible with our full range of optional accessories including the Inner Capsule, Skull Cap, Overwrap, Utility Front, Full Mozzie Front and Full PVC Front, allowing you to customise your shelter for every season.

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Built by Anglers. Backed by a Family Business.

At Quest Tackle we’re a small family-run UK company, and every customer genuinely matters to us.

That’s why every Defier MK4 is backed by:

✔ 12-Month Guarantee

✔ Easy 30-Day Returns

✔ Friendly UK customer support from anglers who actually use the products we sell.

This isn’t just another bivvy it’s the result of over a year of development, customer feedback and continual refinement to create one of the best value premium bivvies on the market.

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 Ready for Your Next Session?

Order your Quest Defier MK4 today and experience the latest generation of one of our most popular bivvies.

If you have any questions before ordering, simply send us a message. You’ll be speaking directly with Matt, the owner of Quest Tackle, who’ll be happy to help you choose the right setup. [message here]

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 Technical Specifications

• Size: 280 × 225 × 150cm

• Material: 20,000HH Aeroshell™ Fully Breathable Blackout Fabric

• Strong Aluminium Frame

• Upgraded Pole System

• Heavy-Duty Zipped-In Groundsheet

• Removable Front Panel

• Clear PVC Window

• Rear Ventilation System

• FREE Internal Vapour Shield Included

• Heavy-Duty Pegs

• Oversized Carry Bag