Belay Jacket 4.0
Waterproof | Thermal
SF Belay 4.0 Tactical Jacket – Insulated Military Cold-Weather Jacket UK
Engineered for the cold weather warrior – advanced insulation, rugged performance, and mission-ready protection.
The SF Belay 4.0 Tactical Jacket is the latest evolution of our bestselling insulated design, built for operators facing the harshest environments. Combining System Dual Protection (SDP) technology with PrimaLoft® Gold insulation and a soft-touch Matrix inner lining, this jacket delivers elite thermal efficiency, comfort, and mobility.
- Cold-Weather Performance: Provides superior insulation and breathability, keeping you warm and dry in extreme conditions.
- Military-Grade Construction: Trusted military clothing designed for field operations, deployment, and tactical missions.
- Lightweight & Durable: Delivers warmth without bulk, perfect for layered systems or standalone wear.
- Built for Tactical Use: Engineered for professionals who demand reliability and performance in every mission.
The SF Belay 4.0 stands among the best tactical jackets UK operators rely on, offering the ideal balance of warmth, durability, and operational functionality.
NATO Stock Number: 8415-99-858-3259
Equip yourself with the SF Belay 4.0 Tactical Jacket, elite tactical gear engineered for cold-weather operations and uncompromising protection.
- Worldwide and BFPO shipping available
- SDP (System Dual Protection)
- Waterproof, windproof and breathable
- Rated comfortably to -15°C with PrimaLoft Gold insulation (-20°C possible)
- Foldaway storm hood with wired peak which provides full coverage and secure fit while still providing the wearer exceptional freedom of movement and vision. Hood can zip into the collar
- Shorter-cut style allowing unhindered leg movement and designed to sit above assault belts
- 330D Nylon reinforcement to shoulder
- Large YKK® front zip with storm flap
- Water-resistant YKK® zip on chest access pocket
- Pit zips
- All pockets have internal lanyard loops and the top pockets an additional D ring
- Central external rank tab with hook panel
- 2-way YKK® side zippers to allow easy donning and doffing and extra ventilation in extreme activities
- Contoured elbow pad allowing the insertion of internal joint protection
- YKK® water-resistant zips on the hip pockets
- Low profile pocket on each upper sleeve with a water-resistant zip closure and loop panel designed for the wearing of unit insignias and rank
SDP Condensation Control
SDP was originally developed for use in Military
applications, and has gone on to be used by Tactical Forces, Mountain Rescue and Emergency Services requiring performance clothing that works as hard as they do.
In recognition of SDP’s success, Keela was awarded the Queen’s Award for Enterprise: Innovation, one of the UK’s most prestigious
awards, which recognises outstanding achievement in the categories of international trade, innovation and sustainable development. Keela are grateful
for the recognition of their innovations and continue to further develop System Dual Protection to ensure our customers know they can face the elements with confidence and in comfort.
Primaloft
PrimaLoft is incredibly soft, lightweight and breathable with excellent water repellency so you remain dry, warm and comfortable, even under the most extreme conditions.
Ounce for ounce as warm as down, Primaloft microfibres are similar in size and shape to down, resulting in nearly equal insulating performance when dry and even better when wet.
Because its individual fibres are water repellent, Primaloft retains much of its ability to keep you warm, even when moisture has soaked through.
