Guideline Alta NGx Sonic Jacket – extremely durable waterproof fly fishing jacket
Guideline Alta NGx Sonic Jacket is a premium technical shell built for fly anglers who fish in demanding conditions and need maximum protection from rain, wind, and cold—without restricting movement.
The jacket uses high-frequency ultrasonic welding to deliver exceptional waterproof performance while keeping the fabric flexible. Articulated shoulders and elbows minimize resistance during casting and when moving along the river.
20,000 mm waterproof rating – reliable protection in heavy rain
20,000 g/m²/24h breathability – comfort during active fishing
3-layer Nylon Taslan – durable, flexible, and quiet fabric
Ultrasonically welded construction for maximum waterproofness
YKK AquaGuard® zippers on all pockets
DuoDrag™ sleeve system with neoprene cuffs to keep water out
Designed for anglers
High fleece-lined collar for added neck protection
Hood with a stiffened peak and 3D, tangle-free adjustment
Two large chest pockets with organizers for tippet & spools
Fleece-lined hand warmer pockets
Internal pockets for a phone and gloves
D-ring for attaching a landing net
Dual hem adjustments + drainage system to prevent water build-up while wading
Functional Design
Eco Features
D-Ring at the back
Technical specifications
Weight: 754 g (size L)
Fabric: 3-layer 100% Nylon Taslan
Waterproofness: 20,000 mm
Breathability: 20,000 g/m²/24h
Zippers: YKK AquaGuard®
Country of origin: China
Eco features
bluesign® approved materials
PFAS-free DWR finish
Low-impact production with reduced environmental footprint
Available size: L Model in the photos is 184 cm / 78 kg and wears size M.