Sort by

Synthetic Filled Clothing Products

£284.80 (inc Vat)
You save 11%
Outdoor Clothing Synthetic-Filled-Clothing Synergy Featherless Jacket Womens Marmot
Synergy Featherless Jacket Womens

The waterproof Women's Synergy Featherless Jacket is made for tackling epic adventures and tough tracks in unpredictable, cold weather.

£284.80 (inc Vat)
You save 11%
Outdoor Clothing Synthetic-Filled-Clothing Synergy Featherless Jacket Marmot
Synergy Featherless Jacket

Waterproof and Warm, what more could you want? The Marmot Synergy Featherless has it all. The GORE-TEX® fabric and PFC-free, water-repellent finish will keep you dry and comfortable even when you wear this insu...

£179.17 (inc Vat)
You save 10%
Outdoor Clothing Synthetic-Filled-Clothing Atom LT Hoody Men's Arc'teryx
Atom LT Hoody Men's

Ultimate synthetic jacket for all activities and year round use and an Up and Under staff favourite.

Special Offer £174.99 (inc Vat)
You save 30%
Outdoor Running Running-Clothing Running-Insulation M's Micro Puff Hoody Patagonia
M's Micro Puff Hoody

Super light synthetic filled hoody that gives the warmth for weight of high quality down.

Special Offer £174.99 (inc Vat)
You save 30%
Outdoor Clothing Synthetic-Filled-Clothing W's Micro Puff Hoody Patagonia
W's Micro Puff Hoody

The best warmth for weight of any other Patagonia jacket, the Micro Puff Hoody delivers ultralightweight, water-resistant, down-like warmth with PlumaFill synthetic insulation.

£169.82 (inc Vat)
You save 10%
Outdoor Clothing Synthetic-Filled-Clothing Proton FL Hoody Women's Arc'teryx
Proton FL Hoody Women's

Arc'teryx FL Hoody Women's | lightweight breathable insulated womens top

£169.82 (inc Vat)
You save 10%
Outdoor Clothing Synthetic-Filled-Clothing Proton FL Hoody Men's Arc'teryx
Proton FL Hoody Men's

Arc'teryx Proton FL Hoody Men's | lightweight breathable insulation

£169.34 (inc Vat)
You save 10%
Outdoor Running Running-Clothing Running-Insulation M's Nano-Air Light Hybrid Hoody Patagonia
M's Nano-Air Light Hybrid Hoody

The Patagonia M's Nano-Air Light Hybrid Jacket takes features from the one of Patagonia's iconic pieces - the Nano-Air and its FullRange Insulation - and combines them with a wicking waffle knit for breathable...

£169.10 (inc Vat)
You save 11%
Outdoor Clothing Synthetic-Filled-Clothing Womens Featherless Hoody Marmot
Womens Featherless Hoody

The Featherless Hoody packs down into it's own pocket and is filled with recycled featherless insulation that feels just as warm as 700 fill power down.

Special Offer £164.49 (inc Vat)
You save 30%
Outdoor Clothing Synthetic-Filled-Clothing Atom AR Hoody Women's Arc'teryx
Atom AR Hoody Women's

The Arcteryx Atom AR Hoody Women's is significantly warmer and more protective than a fleece jacket. This insulated hoody is breathable enough to be used as a super warm mid-layer in cold conditions and protect...

£161.82 (inc Vat)
You save 10%
Outdoor Clothing Synthetic-Filled-Clothing Novus Hoody Marmot
Novus Hoody

Breathable synthetic filled jacket which provides insulation, wind resistance, water-repellancy, snow-shedding and breathability in one package.

£160.48 (inc Vat)
You save 10%
Outdoor Clothing Synthetic-Filled-Clothing M's Nano Puff Jacket Patagonia
M's Nano Puff Jacket

A stylish wind resistant PrimaLoft® Gold Eco Insulation jacket. Ideal down the pub, around town and even on the odd mountain adventure. Smart, warm and 'Patagoina-esk' in it's fashionable style.

Synthetic filled clothing fulfills a similar role to down filled clothing, that is as an insulator.

Even in the coldest conditions, your body produces heat, and you feel cold because this heat is removed quickly in a cold environment. The job of insulation layers is to trap air next to the body, allowing your body to warm up this air and then stop losing heat to the environment.

How well the item of cloting does its job depends on a few things; how much air it can trap, how windproof it is (i.e. how much it can stop the trapped air being stripped away by the wind) and how well it does this job if it gets wet.

Synthetic insulation emulates down in that it is made from a tangle of tiny fibres, which trap air and keep warmth in. It is not as good at insulating as down - you will need more synthetic insulation to give the same warmth, but it is getting close! The outer of a synthetic jacket will usually be made of Pertex - a wind resistant, breathable material which stops the warm air in the fibres from being replaced by cold air in a breeze.

Where Synthetic insulation has a big advantage over down is that it doesn't absorb water very well and is quite strong. This means it drys quicky, and doesn't clump together when it becomes wet, unlike down which loses its insulative properties when wet (if the down has clumped, there is nowhere for air to be trapped). For the UK, or anywhere where you are likely to encounter cold, wet conditions, this property of synthetic insulation makes it much more appropriate than down.

If you are heading to altitude and conditions are likely to become so cold that all water is frozen, a synthetic jacket is likely to be too bulky to be practical if it is warm enough and down is a much better choice.

Up and Under OUTDOOR BLOG

White Water Consultancy (International) Ltd

White Water Consultancy has been a popular name in the world of Canoe and Kayak retail for many years now. Sadly, with the excessive floods that were seen in Llandysul and Bronwydd in late 2018, they've had to close their doors for the final time.
More on White Water Consultancy (International) Ltd »

Baileys is closed down... but we're still here!

Sadly, Baileys The Army Store in Cardiff has closed down. Thankfully, we're here to fulfil all your bushcraft needs!
More on Baileys is closed down... but we're still here! »

Free Scott Soft Cup Promotion

Free Scott Soft Cup with every pair of Scott Shoes purchased online or instore.
More on Free Scott Soft Cup Promotion »

Please wait!