---
title: Mac in a Sac's Venture Ultralite Running Jacket Keeps Your Winter Exercise on Track, at £74.99
description: The Mac in a Sac Venture Ultralite weighs about 240g, packs into its own pocket and costs £74.99. Why the right jacket keeps you exercising all winter.
author: Dr Marina Nani (Editor-in-Chief)
date: 2026-11-06T13:56:42.898Z
updated: 2026-11-06T13:56:42.913Z
canonical: https://richhealthmagazine.com/article/mac-in-a-sac-s-venture-ultralite-running-jacket-keeps-your-winter-exercise-on-track-at-74-99
image: https://cdn.nanimediahouse.com/rich-health-november-2026-card-16x9-1920x1080.webp
categories: Fitness & Movement
content_type: Feature
publication: Rich Health Magazine
schema_type: Article
about:
  - type: Organization
    name: Mac in a Sac
    description: Mac in a Sac makes packable performance outerwear, including waterproof jackets, gilets, ponchos, overtrousers and running jackets that pack into their own pocket.
    url: https://www.macinasac.com/
    industry: Outdoor clothing
---

The hardest part of winter exercise is the first step out of the door. Rain on the window, darkness by half past four and a cold wind give most of us a reason to stay in. Yet the habits that protect your heart, your blood sugar and your mood work best when you keep them all year, not only in summer.

The runner on our November cover wears the Venture Ultralite Running Jacket in neon orange from Mac in a Sac, the brand known for waterproofs that pack into their own pocket. On a winter trail the jacket does two jobs: it keeps the rain out, and it makes you easy to see.

## Why Winter Exercise Protects Your Health

Every story in our Prevention First edition comes back to movement. [Three hard minutes a day](https://richhealthmagazine.com/article/vigorous-activity-cancer-risk) are linked to a lower cancer risk. [Sitting for more than ten hours a day](https://richhealthmagazine.com/article/sitting-all-day-sedentary-lifestyle) harms your heart even if you exercise. [A daily winter walk](https://richhealthmagazine.com/article/winter-walking-benefits) lowers stress and blood sugar, and [winter daylight](https://richhealthmagazine.com/article/winter-daylight-mood) lifts your mood and steadies your sleep. After 30 you lose muscle every decade, and [lifting weights after 50](https://richhealthmagazine.com/article/strength-training-after-50) wins it back.

The weather changes none of this. If your routine stops in November, the gains you built over the summer fade by spring. The simplest fix is kit that makes a wet, cold morning feel manageable.

## The Venture Ultralite Running Jacket

The Venture Ultralite is a lightweight stretch running jacket from the Venture Series, the brand's performance range. Its 2.5-layer shell has fully taped seams and is rated waterproof to 8,000mm, and the stretch fabric moves with you on a climb or a fast descent. Elasticated cuffs let you push the sleeves up when you warm up.

The men's jacket weighs about 240g in a medium and packs into its own pocket, so you can carry it on a dry morning and pull it on when the clouds change. Two zipped front pockets hold a key and a phone, and reflective details help drivers see you on dark evenings.

The jacket costs £74.99. The men's version comes in neon orange, blue and black in sizes XS to XXXL, and a women's version comes in navy in UK sizes 6 to 18.

## How to Keep Exercising Outdoors Through Winter

- Dress for the second mile, not the first. You should feel a little cold when you set off.
- Wear something bright or reflective after dark, so drivers see you sooner.
- Carry a waterproof light enough to forget about, so a shower never cancels your run or walk.
- Go out at lunchtime when you can, to catch the daylight.
- Watch your footing on frost, wet roots and fallen leaves, and shorten your stride on slippery ground.
- Warm up indoors for five minutes before you leave on very cold days.

You do not need a perfect plan for winter. You need a plan you keep, and the right jacket makes that easier.

**About Mac in a Sac**

Mac in a Sac makes packable performance outerwear, including waterproof jackets, gilets, ponchos, overtrousers and running jackets that pack into their own pocket.

[Website](https://www.macinasac.com/)