Mac in a Sac Venture Ultralite Jacket | Waterproof Packable Running Jacket

Mac in a Sac Venture Ultralite Men's Waterproof Running Jacket

The Mac in a Sac Men's Venture Ultralite Waterproof Running Jacket in Navy, Black, Orange or Blue delivers lightweight, breathable weather protection for running and outdoor adventures. Weighing just 240g in size Medium, this technical jacket combines an 8,000mm waterproof rating, 16,000g/m²/24hr breathability and flexible 2.5-layer stretch construction. Fully taped seams, windproof fabric, an adjustable hood and a convenient packable pocket make it an ideal choice for training in Ireland's changeable weather.

Stay protected without unnecessary bulk in the Mac in a Sac Venture Ultralite Jacket. Part of the performance-focused Venture Series, this lightweight waterproof shell is designed for runners and outdoor enthusiasts who need reliable protection and freedom of movement.

The advanced 2.5-layer stretch fabric combines an 8,000mm hydrostatic head rating with excellent breathability of 16,000g/m²/24hr. Fully taped seams provide additional protection against rain, while the windproof construction helps shield you from cold winds on exposed routes.

Designed with a close-fitting performance shape, the Venture Ultralite moves comfortably with your body during exercise. When the weather improves, it packs neatly into its own pocket, making it easy to carry in a running bag or backpack.

Why You'll Like It

• Highly Waterproof: 8,000mm hydrostatic head rating provides reliable protection against rain and wet weather.
• Highly Breathable: 16,000g/m²/24hr breathability helps moisture vapour escape during running and outdoor activity.
• Ultra-Lightweight: Weighs just 240g (8.4oz) in size Medium, providing protection without unnecessary bulk.
• Windproof Protection: Helps prevent cold wind penetrating the fabric.
• Flexible Stretch Fabric: Close-fitting construction allows comfortable movement during exercise.
• Fully Taped Seams: Heat-bonded tape along all seams enhances waterproof protection.
• Adjustable Hood: Features a wire peak for improved coverage and weather protection.
• Packable Pocket: Packs into its own pocket for convenient storage and carrying.
• Secure Zipped Pockets: Two zipped front pockets with an additional internal storage pouch.
• Reflective Detailing: Helps improve visibility during low-light outdoor activities.

Key Features

• Mac in a Sac Venture Series men's running jacket
• Highly waterproof with 8,000mm hydrostatic head rating
• Highly breathable with 16,000g/m²/24hr rating
• Windproof weather protection
• Lightweight 2.5-layer stretch fabric
• Fully taped waterproof seams
• Close-fitting performance design
• Weighs 240g / 8.4oz in size Medium
• Adjustable hood with wire peak
• Two zipped front pockets
• Additional internal storage pouch
• Reflective detailing for improved visibility
• Packs into its own pocket
• Navy, Black, Orange or Blue colourways
• Designed for road running, trail running and outdoor training

Waterproof & Breathable Technology

8,000mm Highly Waterproof Protection

The Mac in a Sac Venture Ultralite features an 8,000mm hydrostatic head rating, providing dependable waterproof protection during wet-weather running and outdoor activities.

The waterproof membrane and fully taped seams work together to help prevent rain entering through the fabric and stitching, making the jacket a practical choice for changeable conditions.

16,000g/m²/24hr Highly Breathable

With a breathability rating of 16,000g/m²/24hr, the Venture Ultralite is designed to allow moisture vapour to escape during physical activity.

This helps manage moisture build-up inside the jacket, supporting comfort during running, hiking and other active pursuits.

Windproof Performance

The windproof fabric helps block cold air, reducing wind penetration during exposed runs, coastal walks and outdoor training sessions.

2.5-Layer Stretch Construction

The technical 2.5-layer fabric consists of an outer fabric, waterproof membrane and lightweight protective inner print.

Unlike traditional waterproof jackets with separate linings, this construction helps reduce weight and bulk while maintaining waterproof performance and flexibility.

The stretch fabric allows comfortable movement during running and other high-energy activities.

Fully Taped Seams

Heat-bonded waterproof tape is applied along all seams to help prevent rain entering through the stitching, providing enhanced protection in wet weather.

Lightweight & Packable Design

Weighing just 240g (8.4oz) in size Medium, the Venture Ultralite is designed for runners who want effective weather protection without carrying a heavy jacket.

When not needed, the jacket packs neatly into its own pocket for convenient storage in a backpack or running bag.

Fit & Sizing

The Mac in a Sac Venture Ultralite features a close-fitting performance fit, designed to minimise excess fabric and bulk while allowing freedom of movement.

The lightweight stretch construction makes it suitable for wearing over running tops and base layers, providing comfortable protection without restricting movement.

If you prefer a roomier fit or plan to wear thicker layers underneath, compare your measurements with the manufacturer's size guide before ordering.

Materials & Specifications

• Brand: Mac in a Sac
• Collection: Venture Series
• Model: Venture Ultralite
• Product Type: Men's Waterproof Running Jacket
• Colour: Navy, Black, Orange or Blue
• Weight: 240g / 8.4oz (Size Medium)
• Fit: Close Fitting
• Fabric Construction: 2.5-Layer Stretch
• Waterproof Rating: 8,000mm Hydrostatic Head
• Breathability: 16,000g/m²/24hr
• Wind Protection: Windproof
• Seams: Fully Taped
• Hood: Adjustable with Wire Peak
• Pockets: Two Zipped Front Pockets
• Additional Storage: Internal Pouch
• Packability: Packs Into Its Own Pocket
• Visibility: Reflective Detailing
• Suitable For: Road Running / Trail Running / Hiking / Walking / Outdoor Training

Care Instructions

Always follow the manufacturer's care label. To help maintain the jacket's waterproof and breathable performance:

• Wash according to the manufacturer's care instructions
• Use a suitable technical clothing cleaner where recommended
• Avoid fabric softeners unless specifically permitted
• Allow the jacket to dry completely before storing
• Avoid excessive heat that may damage the waterproof membrane or seam taping
• Restore the outer fabric's water repellency with a compatible treatment when necessary
• Avoid storing the jacket tightly packed for extended periods

Where to Wear It

• Road Running: Lightweight, breathable waterproof protection for regular training and race days.
• Trail Running: Flexible stretch construction for comfortable movement on outdoor routes.
• Hiking & Walking: A compact waterproof layer that's easy to carry in a backpack.
• Outdoor Training: Breathable fabric helps maintain comfort during active exercise in wet and windy conditions.
• Travel: Lightweight packable design makes it convenient for holidays and outdoor adventures.
• Coastal Activities: Windproof protection for breezy walks and outdoor training in exposed locations.

The Borderland Muff View

The Mac in a Sac Men's Venture Ultralite Waterproof Running Jacket is an excellent choice for runners and outdoor enthusiasts who want dependable waterproof protection without the bulk of a traditional outdoor jacket.

We particularly like the combination of 8,000mm waterproofing, 16,000g/m²/24hr breathability and lightweight 2.5-layer stretch fabric. Together, these features provide practical weather protection while supporting comfort and movement during exercise.

At just 240g in size Medium, it's light enough to carry on training runs, while the packable pocket makes storage particularly convenient when the weather improves.

The close-fitting design, fully taped seams, adjustable hood and reflective detailing are useful finishing touches for anyone running or walking in Ireland's unpredictable conditions.

Shop Mac in a Sac running jackets and outdoor clothing online at Borderland Muff, Co. Donegal, or visit our store in Muff at the start of the Wild Atlantic Way.

Frequently Asked Questions

Is the Mac in a Sac Venture Ultralite Jacket waterproof?

Yes. The Venture Ultralite features an 8,000mm hydrostatic head rating, waterproof membrane and fully taped seams to provide protection against rain during outdoor activities.

How breathable is the Mac in a Sac Venture Ultralite?

The jacket has a breathability rating of 16,000g/m²/24hr, allowing moisture vapour to escape during physical activity to help maintain comfort.

How much does the Venture Ultralite Jacket weigh?

The Mac in a Sac Venture Ultralite weighs approximately 240g (8.4oz) in size Medium, making it a lightweight choice for running and outdoor activities.

Is the Venture Ultralite Jacket suitable for running?

Yes. It is designed for running and active outdoor use, combining lightweight waterproof protection, breathable fabric and a close-fitting stretch construction.

Does the Mac in a Sac Venture Ultralite pack away?

Yes. The jacket packs into its own pocket, making it easy to store and carry when not needed.

What is a 2.5-layer waterproof jacket?

A 2.5-layer waterproof jacket consists of an outer fabric bonded to a waterproof membrane, with a lightweight protective print on the inside rather than a separate full lining. This helps reduce weight and bulk while maintaining weather protection.

Is the Mac in a Sac Venture Ultralite windproof?

Yes. The jacket features windproof fabric designed to help protect against cold winds during running, walking and outdoor activities.

Does the Venture Ultralite have zipped pockets?

Yes. It features two zipped front pockets with an additional internal storage pouch for everyday essentials.

Does the Venture Ultralite have an adjustable hood?

Yes. The jacket features an adjustable hood with a wire peak to help provide additional coverage and protection in wet and windy conditions.

Does the Venture Ultralite Jacket have reflective detailing?

Yes. Reflective details help improve visibility in low-light conditions. They are not a substitute for appropriate lighting or high-visibility clothing when running in darkness.

Is the Venture Ultralite suitable for hiking?

Yes. Its waterproof, windproof and packable design makes it suitable for walking and hiking as well as running. For demanding mountain conditions, always carry clothing appropriate to the route and expected weather.

How does the Mac in a Sac Venture Ultralite fit?

The jacket features a close-fitting performance design with stretch fabric for freedom of movement. Consult the manufacturer's size guide if you prefer additional room for layering.

Where can I buy the Mac in a Sac Venture Ultralite Jacket in Ireland?

You can shop the Mac in a Sac Men's Venture Ultralite Waterproof Running Jacket online at Borderland Muff, an independent outdoor clothing retailer based in Muff, County Donegal, Ireland.