Superalloy Bio Rain Jacket

When speed, weight and packability matter most, the Superalloy Bio Rain Jacket delivers reliable waterproof protection without weighing you down. Designed for trail runners, fast hikers and anyone who wants an emergency shell that's always within reach, it packs into its own pocket and weighs just 155g. Its ultralight construction also makes it an excellent option for many trail running events that require competitors to carry a waterproof jacket as part of their mandatory gear.*

Built with Marmot's NanoPro™ waterproof technology and an ultralight bio-based ripstop fabric, the Superalloy provides waterproof, windproof and breathable protection while taking up minimal space in your running vest, daypack or travel bag. Whether you're chasing a weather window on the trail, travelling light or preparing for unpredictable conditions, it's the jacket you'll be glad you packed.

Its minimalist design doesn't compromise on performance. Fully taped seams, an adjustable hood, water-resistant front zip and a chest pocket that remains accessible while wearing a running vest or backpack provide the protection you need without unnecessary bulk.

For fast-moving adventures where every gram counts, the Superalloy is built to disappear into your pack until the weather turns.

Why It's In Our Pack

• Exceptionally lightweight at just 155g, making it easy to carry on every adventure.
• Packs into its own chest pocket for compact storage in a running vest, backpack or travel bag.
• Ideal for trail runners and fast hikers looking to minimise pack weight.
• Suitable for many trail running events that require participants to carry a waterproof jacket as part of their mandatory gear.*
• Waterproof, windproof and breathable protection without unnecessary bulk.

Best For

• Trail running
• Ultra running
• Fast hiking
• Adventure racing
• Day hikes
• Travel
• Emergency waterproof protection
• New Zealand and Australian conditions

Key Features

• Ultralight 12D bio-based ripstop outer fabric.
• Marmot NanoPro™ waterproof and breathable membrane.
• 20,000mm waterproof rating / 20,000g breathability rating.
• Fully seam-taped construction for dependable waterproof protection.
• PFAS-free Durable Water Repellent (DWR) finish helps water bead off the outer fabric.
• Packs into its own chest pocket for compact storage.
• Water-resistant chest pocket remains accessible while wearing a running vest, backpack or climbing harness.
• Fixed hood with peripheral cord adjustment.
• Adjustable drawcord hem helps seal out wind and rain.
• Bonded cuffs with partial elastic provide a secure, comfortable fit.
• Water-resistant front zip for additional weather protection.

Common Questions

Is the Superalloy Bio Rain Jacket fully waterproof?

Yes. The Superalloy combines Marmot's NanoPro™ waterproof membrane with fully taped seams and a PFAS-free DWR finish to provide reliable waterproof protection when conditions deteriorate.

Who is the Superalloy best suited to?

The Superalloy is designed for trail runners, fast hikers, adventure racers and travellers who need an ultralight waterproof shell that can be carried on every outing.

Can I carry the Superalloy in a running vest?

Absolutely. Weighing just 155g and packing into its own chest pocket, the Superalloy is specifically designed to fit comfortably into running vests, waist packs and lightweight daypacks.

Is the Superalloy suitable for everyday use?

Yes. While it's purpose-built for fast and light adventures, its compact size makes it an excellent emergency waterproof layer for commuting, travel and everyday outdoor activities.

How small does the Superalloy pack down?

The jacket stuffs into its own chest pocket, creating a compact package that's easy to store or clip onto your pack or harness, making it ideal when pack space is limited.

*Always check the mandatory gear requirements for your specific event, as waterproof jacket standards and specifications vary between race organisers.

Product Care: Machine Wash Cold, Use Liquid Detergent, Do Not Use Powdered Detergent, Gentle Cycle, Tumble Dry Low, Do Not Iron, Do Not Bleach, Do Not Dry Clean, Do Not Use Fabric Softener, Rinse Twice, Do Not Store Wet
Center Back Length: 29.5in
Main Fabric: NanoPro™, 100% Nylon, Ripstop, 67g/sqm
Style Number: M15378
Waterproof: YES
Product Weight: 165.0 g
Windproof: YES