Mac in a Sac Mens Venture Ultralite Trousers

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

The Mac in a Sac Men's Venture Ultralite Waterproof Trousers deliver lightweight, breathable protection for trail running, fast hiking and outdoor adventures. Made from flexible Vaporlite stretch fabric with a 2.5-layer waterproof construction, these technical trousers feature an 8,000mm waterproof rating, 16,000g/m²/24hr breathability and fully taped seams. Weighing just 195g in size Medium, they're designed for fast movement and easy packing without unnecessary bulk.

Move faster and stay protected in the Mac in a Sac Venture Ultralite Trousers. Designed for runners and outdoor enthusiasts who need dependable weather protection without carrying heavy waterproof clothing, these lightweight trousers combine flexibility, breathability and practical performance.

The advanced Vaporlite fabric contains 90% polyester and 10% spandex, providing excellent stretch and freedom of movement. A 2.5-layer waterproof construction, fully taped seams and windproof fabric help protect against rain and exposed conditions.

With an elasticated waist, articulated knees and a close-fitting athletic design, the Venture Ultralite Trousers are built for comfortable movement during trail running, hillwalking and other active pursuits.

Why You'll Like Them

• Highly Waterproof: 8,000mm hydrostatic head rating helps protect against rain and wet conditions.
• Highly Breathable: 16,000g/m²/24hr breathability helps moisture vapour escape during exercise.
• Ultra-Lightweight: Weigh just 195g in men's size Medium.
• Vaporlite Stretch Fabric: Flexible polyester-spandex construction provides freedom of movement.
• 2.5-Layer Waterproof Construction: Lightweight technical fabric designed for active weather protection.
• Fully Taped Seams: Heat-bonded seam tape helps prevent water entering through stitching.
• Windproof Protection: Helps shield against cold winds during outdoor activities.
• Articulated Knees: Designed for comfortable movement when running, climbing and walking uphill.
• Elasticated Waist: Provides a flexible, secure fit during activity.
• Packable Design: Elasticated storage loop helps keep the trousers compact when not in use.
• Reflective Details: Help improve visibility during low-light activities.
• PFC & PFOA Free: Manufactured without the specified fluorocarbon chemicals.

Key Features

• Mac in a Sac men's Venture Ultralite waterproof trousers
• Lightweight Vaporlite stretch fabric
• 90% polyester / 10% spandex
• 2.5-layer waterproof construction
• 8,000mm hydrostatic head waterproof rating
• 16,000g/m²/24hr breathability rating
• Fully taped waterproof seams
• Windproof performance
• Close-fitting athletic design
• Comfortable elasticated waistband
• Articulated knees for freedom of movement
• Elasticated storage loop
• Cycle straps
• Reflective detailing
• 195g weight in men's size Medium
• PFC and PFOA free
• Suitable for running, hiking, walking and cycling

Waterproof & Breathable Technology

8,000mm Highly Waterproof Protection

The Venture Ultralite Trousers feature an 8,000mm hydrostatic head rating, providing waterproof protection against rain and wet conditions during outdoor activities.

The waterproof fabric works alongside fully taped seams to help prevent moisture entering through the material and stitching.

16,000g/m²/24hr Highly Breathable

With a breathability rating of 16,000g/m²/24hr, the trousers are designed to allow moisture vapour to escape during exercise.

This helps manage moisture build-up inside the garment, supporting comfort during trail running, fast hiking and other high-energy outdoor activities.

2.5-Layer Vaporlite Stretch Fabric

The technical Vaporlite fabric combines 90% polyester and 10% spandex for lightweight flexibility and freedom of movement.

Its 2.5-layer construction features an outer fabric, waterproof membrane and lightweight protective inner finish, helping reduce bulk compared with traditional lined waterproof trousers.

Fully Taped Seams

Heat-bonded waterproof tape is applied along the seams to help prevent rain entering through the stitching, improving protection during wet-weather activities.

Windproof Protection

The windproof construction helps reduce cold wind penetration, providing additional comfort during exposed runs, hillwalking and outdoor adventures.

Lightweight & Packable

Weighing approximately 195g in men's size Medium, these waterproof trousers are designed to be carried without unnecessary weight. An elasticated storage loop helps keep them compact when packed away.

Fit & Sizing

The Mac in a Sac Venture Ultralite Trousers feature a close-fitting athletic cut, designed to reduce excess fabric while allowing freedom of movement.

The elasticated waistband provides flexible comfort, while articulated knees support bending, running and movement over uneven terrain.

The stretch fabric allows the trousers to move naturally during exercise. If you plan to wear them over thicker trousers or prefer a looser fit, consult the manufacturer's size guide before ordering.

Materials & Specifications

• Brand: Mac in a Sac
• Collection: Venture Series
• Model: Venture Ultralite Trousers
• Product Type: Men's Waterproof Running Trousers
• Fabric: Vaporlite Stretch
• Material Composition: 90% Polyester / 10% Spandex
• Fabric Construction: 2.5-Layer Waterproof
• Waterproof Rating: 8,000mm Hydrostatic Head
• Breathability: 16,000g/m²/24hr
• Wind Protection: Windproof
• Seams: Fully Taped
• Fit: Close Fitting
• Waist: Elasticated
• Knees: Articulated
• Storage: Elasticated Packing Loop
• Additional Features: Cycle Straps
• Visibility: Reflective Detailing
• Weight: Approx. 195g (Men's Medium)
• Chemical Finish: PFC & PFOA Free
• Suitable For: Trail Running / Hiking / Hillwalking / Cycling / Outdoor Training

Care Instructions

Always follow the manufacturer's care label to maintain the trousers' waterproof and breathable performance.

• Close any fastenings before washing
• Wash gently at a low temperature if permitted by the care label
• Use a suitable technical clothing cleaner when recommended
• Avoid fabric softeners unless specifically permitted
• Allow the trousers to dry completely before storing
• Avoid excessive heat that may damage the waterproof membrane or seam taping
• Restore outer water repellency with a compatible treatment when necessary
• Avoid storing tightly compressed for extended periods

Where to Wear Them

• Trail Running: Lightweight waterproof protection and stretch comfort for changing conditions.
• Fast Hiking: Flexible construction and breathable performance for active hillwalking.
• Hillwalking: Windproof and waterproof protection for exposed walking routes.
• Road Running: A lightweight alternative to traditional bulky waterproof overtrousers.
• Cycling: Reflective details and cycle straps add practicality for active commuting.
• Travel: Compact construction makes them easy to carry when rain is forecast.

The Borderland Muff View

The Mac in a Sac Men's Venture Ultralite Waterproof Trousers are a great choice for runners and outdoor enthusiasts who need reliable weather protection without carrying heavy waterproof clothing.

We particularly like the combination of 8,000mm waterproofing, 16,000g/m²/24hr breathability and flexible Vaporlite stretch fabric. These features make the Ultralite particularly well suited to active outdoor use, where staying comfortable while moving is essential.

At just 195g in size Medium, they're easy to carry in a running pack or backpack. The articulated knees, elasticated waist and close-fitting design provide the flexibility needed for trail running and fast hiking.

For training along Donegal's coastal routes, exploring the Wild Atlantic Way or heading out on local hills in changeable weather, these trousers are a practical addition to your outdoor kit.

Shop Mac in a Sac waterproof trousers 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

Are the Mac in a Sac Venture Ultralite Trousers waterproof?

Yes. They feature an 8,000mm waterproof rating and fully taped seams to help prevent rain entering through the fabric and stitching.

How breathable are the Venture Ultralite Trousers?

They have a breathability rating of 16,000g/m²/24hr, allowing moisture vapour to escape during physical activity.

How much do the Venture Ultralite Trousers weigh?

They weigh approximately 195g in men's size Medium, making them a lightweight option for running, hiking and outdoor adventures.

Are the Mac in a Sac Venture Ultralite Trousers suitable for running?

Yes. Their lightweight Vaporlite stretch fabric, articulated knees and close-fitting design make them suitable for road running, trail running and other active outdoor pursuits.

Do the Venture Ultralite Trousers pack away?

Yes. Their lightweight construction and elasticated storage loop help them pack down compactly for carrying in a backpack or running bag.

What material are the Venture Ultralite Trousers made from?

They are made from Vaporlite stretch fabric containing 90% polyester and 10% spandex, with a 2.5-layer waterproof construction.

Are the Venture Ultralite Trousers windproof?

Yes. Their windproof fabric helps protect against cold winds during outdoor activity.

Do the Venture Ultralite Trousers have an elasticated waist?

Yes. They feature an elasticated waistband for a secure, flexible fit during movement.

Are the Venture Ultralite Trousers suitable for cycling?

They can be used for cycling and active commuting. The supplied specifications include cycle straps and reflective detailing, although they are primarily designed for running and fast outdoor movement.

Do the Venture Ultralite Trousers contain PFC or PFOA?

The manufacturer describes the Venture Ultralite Trousers as PFC and PFOA free.

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

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