The Inov8 Stormshell FZ V2 is designed for people who need reliable protection without carrying unnecessary weight. It aims to offer the performance of a full‑strength waterproof shell while remaining light enough for fast movement in the mountains. This updated version improves on the original Stormshell with stronger materials, a smoother inner surface and a more refined fit.
The jacket is built for running, hiking and training in harsh weather. It focuses on practical performance rather than gimmicks, and it delivers a dependable balance of waterproofing, breathability and durability. This review explores how the Stormshell FZ V2 performs in real conditions and whether it earns its place as a premium lightweight waterproof jacket.
Design and Build Quality
The Stormshell FZ V2 uses a 2.5‑layer waterproof fabric that feels more robust than the previous model. The material has a smoother inner surface, which makes it more comfortable against the skin during long sessions. Although the jacket remains minimalist, it no longer feels fragile or overly thin.
A full‑length waterproof zip replaces the half‑zip design of the earlier version. This change makes the jacket easier to put on and take off, especially when conditions change quickly. The zip is backed by a storm flap to reduce water ingress, and the puller is easy to grip with cold or wet hands.
The seams are fully taped, and the stitching is neat throughout. There are no loose threads or weak points, which gives the jacket a reassuring sense of quality. The fabric also has a slight stretch, helping with mobility on technical terrain or during fast movement.
Waterproofing and Weather Protection
The Stormshell FZ V2 has a 20,000mm hydrostatic head rating. This places it firmly in the high‑performance waterproof category. In heavy rain, the jacket sheds water quickly and resists wetting out for longer than many lightweight shells.
The hood is one of the strongest features. It is fully adjustable and stays secure even in strong winds. The peak is stiff enough to keep rain off the face, and the shape offers good visibility without feeling restrictive. It works well with or without a cap underneath.
Wind protection is equally impressive. The jacket blocks gusts effectively and maintains its shape without flapping. Despite its low weight, it never feels flimsy or unstable in exposed conditions.
Breathability and Ventilation
Breathability is often a challenge for lightweight waterproof jackets, but the Stormshell FZ V2 performs better than many alternatives. The 20,000g/m² breathability rating is supported by real‑world use. During high‑intensity efforts, moisture build‑up is noticeable but manageable. Once activity levels drop, the jacket dries quickly.
There are no pit zips or additional vents. This is expected for a jacket in this weight category. Instead, ventilation relies entirely on the fabric. For most fast‑moving activities, this is sufficient. People who run particularly hot may still find themselves unzipping the front for extra airflow.
Fit and Comfort
The fit is athletic and designed to reduce excess fabric. It still allows enough room for a light mid‑layer. The slightly longer back provides good coverage when moving uphill or bending forward.
The sleeves are articulated, allowing a full range of motion without pulling across the shoulders. The cuffs use simple elastic rather than Velcro. This keeps weight down and avoids bulk. Although the cuffs are not adjustable, they seal well enough to prevent water running down the arms.
The collar is soft and comfortable. When fully zipped, it forms a snug seal without feeling tight or scratchy. The overall fit feels secure and stable during fast movement.
Weight and Packability
One of the biggest strengths of the Stormshell FZ V2 is its low weight. At around 200g depending on size, it is light enough to carry on every run or hike. It packs down into its own pocket or a small stuff sack, taking up very little space in a pack or running vest.
This makes it ideal for people who want a reliable waterproof layer that can be carried as a precaution. The compact size also makes it suitable for multi‑day adventures where space is limited.
Durability and Long‑Term Use
Lightweight jackets often compromise on durability, but the Stormshell FZ V2 strikes a good balance. The updated fabric feels tougher than the previous version. After repeated use in rough terrain, it shows minimal signs of wear.
The DWR coating performs well, although it will eventually need reproofing like all waterproof jackets. The zips and seams remain solid, and the elastic components show no early signs of fatigue.
While it is not designed for heavy abrasion or bushwhacking, it is more durable than many ultralight shells. With normal use, it should last well.
Performance Across Activities
The Stormshell FZ V2 is built for fast mountain running, but its versatility makes it suitable for a wide range of activities.
Running
The jacket performs exceptionally well during high‑intensity movement. It stays in place, does not flap excessively and offers strong protection without feeling heavy. The breathability is good enough for most conditions, and the fit allows unrestricted arm movement.
Hiking
For hiking, the jacket offers a strong balance of protection and weight. It is comfortable for long days and packs away easily when not needed. The lack of hand pockets may be a drawback for some people, but this is common in lightweight running‑focused shells.
Cycling
The slim fit and longer back make it a reasonable option for cycling in wet conditions. The hood fits under a helmet, although it is not specifically designed for cycling.
Everyday Wear
The clean design makes it suitable for everyday wear in wet weather. It is not insulated, so layering is important in colder conditions.
Value for Money
The Stormshell FZ V2 sits at the higher end of the price range for lightweight waterproof jackets. However, the combination of performance, durability and low weight makes it a strong contender for people who need reliable protection in demanding conditions.
Cheaper options are available, but few offer the same balance of waterproofing, breathability and packability. For people who spend a lot of time in the mountains or who want a dependable emergency layer, the investment is justified.
Strengths and Weaknesses
Strengths
- Excellent waterproofing and wind protection
- Very lightweight and highly packable
- Comfortable, athletic fit
- High‑quality hood design
- Improved durability over the previous version
- Smooth and reliable full‑length zip
Weaknesses
- No hand pockets
- Breathability is good but not exceptional
- Premium price
- Elastic cuffs lack adjustability
Final Verdict
The Inov8 Stormshell FZ V2 is a capable and dependable lightweight waterproof jacket. It offers impressive protection without compromising on weight or packability. The updated design feels more durable and refined, and the fit works well for a wide range of activities.
Although it is not the cheapest option, the performance and reliability make it a worthwhile investment for people who value dependable gear. The Stormshell FZ V2 stands out as one of the most balanced lightweight waterproof jackets available today.
