Front of HD Flex Storm Shell Jacket in Ash Brown

Back of HD Flex Storm Shell Jacket in Ash

Detail hunter in reeds wearing HD Flex Storm Shell Jacket in Valo Camouflage using pit zip ventilation

Detail of hunter placing shells in cargo pocket of HD Flex Storm Shell Jacket in Valo Camouflage

Detail waterfowl hunter tightening the neoprene cuff on the HD Flex Storm Shell Jacket in Valo Camouflage

Waterfowl hunter in reeds unzipping chest pocket wearing HD Flex Storm Shell Jacket in Valo Camouflage

Detail phone being placed in zippered chest pocket on the HD Flex Storm Shell Jacket in Valo Camouflage

Detail of hunter removing gloves from interior pocket on the HD Flex Storm Shell Jacket in Valo Camouflage

new size

Best Use: Waterfowl

The most durable waterproof rain jacket KUIU has ever produced, the HD Flex Storm Shell is built with the fit, pocketing, and features every waterfowl hunter needs. It’s equipped with an all-new puncture and abrasion resistant 4-layer waterproof fabric that stretches for an unrestricted swing on fast-flying birds.

Weight

2lb 5.5 oz / 1063 g (L)

Protection

Waterproof
Windproof
Puncture Resistant
Extreme Weather

Materials

Toray® 4-Layer Waterproof Fabric – 271 g/m²
Duraflex® Hardware
YKK® Aquaguard Zippers

Conditions

Cold to Frigid
Cold - (32-45°F / 0-7°C)
Frigid - (Below 32°F / 0°C)

Layering Position

Outer Layer – Waterproof Raingear

HD Flex Storm Shell Jacket

4-Layer puncture resistance built for extreme weather. Our most durable raingear.

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Color: Ash

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Backed by the KUIU Lifetime Warranty

Free Size Exchanges

Best Use: Waterfowl

Designed as an ultra-durable waterproof rain jacket for the waterfowl hunter, the HD Flex Storm Shell is built from an all-new 4-Layer HD Flex fabric so that you can weather any storm unscathed. The jacket’s waterproof breathable fabric offers ample stretch for non-binding movement, yet it’s puncture resistant and highly durable.

With the waterfowl hunter’s demands top of mind, the jacket is crafted with a purpose-driven fit and gusseted underarm for no lift, full articulation, and unrestricted shooting ability. While retaining a comfortable ergonomic fit, it’s designed with minimal seams for reduced weight and added durability.

The jacket’s bonded lining was carefully chosen for frictionless, non-chaffing movement against underlying clothing, while remaining durable for extensive hard use. Engineered with a focus on maximum long-term reliability, we optimized seam construction, taping, and seam junction reinforcements for added longevity.

Features include Sherpa fleece lined hand pockets, front cargo pockets for shells and storage, waterproof cuffs, a two-way adjustable storm hood for complete protection and visibility, and pit zips for temperature regulation. The jacket’s overall length is balanced for both field use and while wearing the HD Flex Wader in flooded timber situations. The hem cinch with cord keeper may also be adjusted to effectively shorten the jacket length for wading in deeper water.

4-layer puncture and wear resistant fabric
2-way adjustable drop-away style hood
Soft-brushed tricot paneling back of neck & chin
Zippered chest pockets
Upper hand pockets with Sherpa fleece lining
Interior zippered chest pocket
Cargo pockets with magnetic snap closure & drainage holes, suitable for shells
Pit zip ventilation
No-lift underarm gusset sleeve patterning
Adjustable hem cinch with cord keeper
D-rings at front chest for accessory & call attachment
Watertight neoprene cuffs with hook & loop closure
Articulated for shooting
Optimized body length for wader use
Fit: Outer Layer – Sized to layer over base layer, mid-layer fleece, insulated jacket, & HD Flex Wader

Toray® 4-Layer Waterproof Fabric – 271 g/m²

Primeflex Polyester high-density twill
Polyurethane coating
Dermizax® non-porous waterproof breathable membrane
Nylon backer

Fully seam taped
DWR water resistance
Burly mud-resistant main zipper
YKK® Aquaguard pocket zippers
Sherpa fleece-lined hand pockets
Glove & water friendly hardware
Waterproofness: 50,000mm+
Breathability (A1 test): 5,000 g/m²/24hrs
Breathability (B1 test): 13,000 g/m²/24hrs
Contains PFAS

This waterproof hard shell rain jacket is designed to layer over a base layer, mid-layer fleece, and an insulated mid-layer, all in the same size. Only upsize if you measure between sizes or prefer a loose fit.

Layering Example – Frigid Conditions:
*For an individual measuring size: XL

Base Layer: Peloton 118 LS Crew – XL
Mid-Layer Fleece: StrongFleece 290 WF Full Zip – XL
Mid-Layer- Insulated: Flyway Insulated Hooded Jacket – XL
Outer Layer- Waterproof Rain Gear: HD Flex Storm Shell Jacket – XL

Additional Resources:

Fit & Layering Guide

Hunter raising his shotgun to shoot at passing birds while wearing an HD Flex Storm Shell Jacke to show the range of motion

No-Lift Articulated Design

Tailored for waterfowl hunting, the jacket features a gusseted underarm so you can shoulder, point, and shoot without lift or restriction.

Hunter wading through water to place mallard duck decoys while wearing an HD Flex Storm Jacket in Valo Camouflage

Adjustable Hem Cinch

The adjustable hem cinch helps block out cold and rain and may also be adjusted to effectively shorten the jacket length for wading in deeper water.

Hunter wading through water to place mallard duck spinning decoys while his right hand is tucked into the sherpa fleece lined pocket of his HD Flex Storm Jacket in Valo Camouflage

Sherpa Fleece Pockets

Raised fleece-lined hand pockets offer warmth and protection in cold and wet conditions.

KUIU Waterfowl Layering System

Watch as Shaun Ayers explains the all-new KUIU Waterfowl System. Learn about the new designs, features, and materials that make it the most complete skin-to-shell system in the industry.

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