Mac In A Sac

Up and Under in Cardiff (UK) proudly stocks a range of Mac in a Sac products, including packable waterproof jackets and trousers for adults and children. Designed for everyday adventures, Mac in a Sac combines high-performance waterproof technology with lightweight, packable convenience, making their products perfect for school bags, hiking backpacks or beach trips.

With over 25 years of expertise in waterproof textiles, Mac in a Sac has evolved from its roots in Target Dry to become a standalone brand known for innovation and reliability. From RDS-certified down jackets to waterproof essentials, their products continue to empower adventurers of all kinds, offering freedom and comfort in any weather.

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Mac In A Sac

Speedpro Backpack

The Mac in a Sac SpeedPro Backpack is a lightweight, waterproof 20L running pack built for endurance athletes and trail runners. With a 5,000mm waterproof rating, fully taped seams, and ergonomic, bounce-free design, it provides secure storage and quick hydration access with dual bottle pouches. Reflective detailing, adjustable sternum straps, and multiple pockets make this pack perfect for ultra marathons, wet-weather training, or fastpacking adventures.

£59.99 inc. VAT £51.91 inc. VAT

Mac In A Sac

Ultralite Trouser

The Mac in a Sac Ultralite Trousers are the ultimate choice for trail runners and outdoor enthusiasts seeking lightweight, waterproof performance without compromise. Made from ultra-light, flexible Vaporlite fabric (90% Polyester, 10% Spandex), these trousers provide exceptional freedom of movement and adapt effortlessly to changing conditions. With a waterproof rating of 8,000 mm, breathability of 16,000 gsm, and windproof construction, they keep you dry and comfortable on any trail. Fully taped seams, articulated knees, and reflective detailing add to their durability and functionality, making them perfect for fast-paced adventures.

From £56.38 inc. VAT

Mac In A Sac

Ultralite Jacket Ladies

The Mac in a Sac Ultralite Jacket for Women is the ultimate running companion for unpredictable weather, offering a lightweight, packable, and stretchable design that easily fits into its own pocket. With a highly waterproof (8,000 mm) and breathable (16,000 mm) 2.5-layer construction, fully taped seams, and windproof fabric, it keeps you dry and comfortable in any conditions. The adjustable hood with a wire peak, reflective detailing for visibility, and secure zipped pockets add practicality, while the PFC & PFOA-free materials make it an eco-friendly choice for active adventurers.

From £60.96 inc. VAT

Mac In A Sac

Ultralite Trouser Ladies

The Mac in a Sac Ultralite Trousers (ladies) are the ultimate choice for trail runners and outdoor enthusiasts seeking lightweight, waterproof performance without compromise. Made from ultra-light, flexible Vaporlite fabric (90% Polyester, 10% Spandex), these trousers provide exceptional freedom of movement and adapt effortlessly to changing conditions. With a waterproof rating of 8,000 mm, breathability of 16,000 gsm, and windproof construction, they keep you dry and comfortable on any trail. Fully taped seams, articulated knees, and reflective detailing add to their durability and functionality, making them perfect for fast-paced adventures.

From £56.38 inc. VAT

Mac In A Sac

Ultralite Jacket

The Mac in a Sac Ultralite Jacket is the ultimate running companion for unpredictable weather, offering a lightweight, packable, and stretchable design that easily fits into its own pocket. With a highly waterproof (8,000 mm) and breathable (16,000 mm) 2.5-layer construction, fully taped seams, and windproof fabric, it keeps you dry and comfortable in any conditions. The adjustable hood with a wire peak, reflective detailing for visibility, and secure zipped pockets add practicality, while the PFC & PFOA-free materials make it an eco-friendly choice for active adventurers.

From £60.96 inc. VAT

Mac In A Sac

Poncho

The Mac In A Sac Poncho is ready to explore. A packable waterproof cape is your travel or commuting essential to keep you and your stuff dry. Designed for demanding activity in various outdoor environments. With a dependable, explorer look you’ll feel agile, free and easy-moving. Also an indispensable piece of kit for your next festival or outdoor concert (whenever that will be!).

From £34.75 inc. VAT

Mac In A Sac

Mini Origin

The Mac In a Sac Origin is developed to protect kids in all weather, without overheating and is adjustable for all conditions. Lightweight, packable and easily stored, they’ll be prepared for variable weather and ready for any challenge. With a solid, functional look designed for the outdoors, be ready for family camping trips, local walks, school and sport activities.

From £14.00 inc. VAT

Mac In A Sac

Full Zip Origin Overtrousers

You’ve checked the forecast, and you need to be ready to battle traffic on your morning commute. The hike is planned, but conditions don’t look that great. Developed for lower body protection outdoors, packable waterproof overtrousers are your essential kit for hiking and camping, or your cycle to work.

Up to 50%
off RRP
From £16.00 inc. VAT

Mac In A Sac

Children's Origin Overtrousers

The Mac In A Sac Children's Origin Overtrousers are the ideal waterproof trousers for your little explorer! Fully waterproof and highly breathable to keep the elements off and to keep them exploring! Breathable means heat can escape and the user will not get that sticky, clammy feeling; so your child can run around to their hearts content and not worry about being too hot! They're also windproof - which is ideal for blustery UK conditions.

From £8.48 inc. VAT

Mac In A Sac

Children's Origin

When the weather turns, protect your young explorers and puddle stompers from sudden showers and heavy downpours with these packaway waterproof jackets. The new Origin collection offers even higher waterproofness and breathability, meaning that these kids raincoats will keep your little ones dry, whatever Mother Nature may throw at them.

From £12.48 inc. VAT

Mac In A Sac

Puddlesuit

The Mac In A Sac Puddlesuit is a waterproof and windproof all-in-on suit that will keep children dry and comfortable on those rainy days. It has dual front zips and elasticated cuffs, making it easy to put on and take off. There's also reflective details and piping to improve visibility in low light conditions. The Puddlesuit is a wet weather essential and perfect for playpark and campsite use.

Up to 50%
off RRP
From £15.98 inc. VAT

Mac In A Sac

Origin Overtrousers

The Mac in a Sac Origin Over trousers are a unisex adults waterproof packable trousers, which is highly waterproof and breathable. Travel friendly. Essential for any camping trip, bike ride, morning run or leisurely walk!

From £19.14 inc. VAT

Mac In A Sac

Origin 2

The Mac In A Sac Origin 2 jacket has been developed to regulate body temperature and protect you in all weather conditions. The Origin 2 is adjustable, lightweight and packable, so you'll always be prepared for variable weather. It has a solid and functional look that's been designed for the outdoors and fits easily into its own, easy to store and compact sack.

From £32.22 inc. VAT

Mac In A Sac

Neon 2

The Origin Series was designed with a specific purpose in mind; to place a high-performance jacket, packed into a convenient sack, in to the hands of the everyday adventurer. This high-performance waterproof jacket is easily unpacked and packed from its compact sack. Whether you are an intrepid explorer, a weekend traveller, or a daily commuter, the Origin Series will be a staple product in your everyday carry.

From £32.22 inc. VAT