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Verdict: 
Excellent value lightweight windproof and waterproof jacket
Weight: 
229g
BTwin 500 Women's Waterproof Jacket
9 10

At just £25, the BTwin 500 Women's Waterproof Jacket seems a real bargain. BTwin is the own brand of sports superstore Decathlon. The jacket has a good cut, feels comfortable and has some good features such as the mesh-lined ventilation gussets at the front of the shoulders and on the back. It's a great lightweight, high-vis waterproof to stuff in a jersey pocket or wear on your commute from spring through to autumn.

The 100 per cent polyester fabric keeps the wind off and is remarkably breathable – I noticed a bit of clamminess on the inside of the lower sleeves after riding hard, but no more than with far more expensive jackets such as Endura's Luminite and Altura's NightVision. There's no mesh lining on the inside of the jacket, which keeps the weight and bulk down, and it feels fine against the skin – I'd happily wear it over a T-shirt.

> Find your nearest Decathlon store here

> Buy this online here

The jacket also scored highly for waterproofness. Given a lack of sufficiently heavy rain, I tested it by standing under a fairly powerful shower for about 10 minutes and was amazed how the water ran off it like the proverbial duck's back. A quick shake and the material was all but dry. And despite aiming the shower at the lower sleeves – an area I often find water soaks through on other jackets – my arms remained dry as a bone, as did the rest of me. Quite impressive given that Decathlon rates it for only two hours' wet weather. The seams are all taped inside too, which prevents water ingress through the stitching.

BTwin 500 Womens Waterproof Jacket - shoulder vent.jpg

BTwin 500 Womens Waterproof Jacket - shoulder vent.jpg

The fit is fairly flattering without too much excess material, although I had to go for a medium/large (UK 14/EU 42) when usually I'm a small or medium size, in order that the shoulders didn't feel constricted when in the riding position. It's a good length in the body and isn't too short at the front, which I prefer. The drop tail protects your bottom from tyre spray.

BTwin 500 Womens Waterproof Jacket - tail.jpg

BTwin 500 Womens Waterproof Jacket - tail.jpg

The sleeves could be one or two inches longer – they're all right if you ride in an upright position but creep up if you're more stretched out (and exposed wrists are my pet hate). There are narrow elasticated cuffs that are the right tightness, and the hem is slightly elasticated too.

BTwin 500 Womens Waterproof Jacket - cuff.jpg

BTwin 500 Womens Waterproof Jacket - cuff.jpg

I thought at first the neck was maybe a bit big, but in fact on the bike it felt quite snug, although it gapes slightly at the back of the neck in the riding position. The collar is nice and tall, too.

BTwin 500 Womens Waterproof Jacket - collar.jpg

BTwin 500 Womens Waterproof Jacket - collar.jpg

Aside from the fluoro colour, which should make you immune to SMIDSYs (sorry mate I didn't see you), one of the notable features is the slightly off-centre zip. I'm not sure this makes any difference to comfort but it looks quite nice. There's a storm flap behind it and a garage at the neck to prevent the zip rubbing your skin.

> Check out our guide to the best waterproof jackets here

As well as the ventilation gussets there are perforations on the sides below each armhole to let moisture out. Some more holes on the underneath of the sleeves would have aided breathability.

BTwin 500 Womens Waterproof Jacket - vent.jpg

BTwin 500 Womens Waterproof Jacket - vent.jpg

There is a zipped pocket with storm flap at the rear, big enough for wallet, phone and keys, and the jacket packs away into it too. I'd ideally like a front pocket for easy access to keys and train tickets, but you can't complain at this price. For night-time visibility there is a large BTwin logo front and rear, reflective piping on the back and lower sleeves, and a reflective strip all around the hem.

All in all, it's a truly great jacket for the money.

Verdict

Excellent value lightweight windproof and waterproof jacket

road.cc test report

Make and model: BTwin 500 Women's Waterproof Jacket

Size tested: Medium/Large, Fluo Coral Pink

Tell us what the jacket is for, and who it's aimed at. What do the manufacturers say about it? How does that compare to your own feelings about it?

Decathlon says: "A rainproof cycling jacket for women for regular cycling in wet weather (2-hour rides)."

Tell us some more about the technical aspects of the jacket?

Main fabric: 100% Polyester, Yoke: 100% Polyamide

Waterproof membrane with taped seams

Ventilation gussets with mesh lining both at the front and back

Micro-perforations underarm

Drop tail

Off-centre zip with storm flap and chin guard

Elasticated cuffs

Reflective logos and piping front and rear

Rainproof zip pocket at the back

Neon pink

Guarantee: 2 years

Rate the jacket for quality of construction:
 
9/10
Rate the jacket for performance:
 
8/10
Rate the jacket for durability:
 
8/10
Rate the jacket for waterproofing, based on the manufacturer's rating:
 
9/10
Rate the jacket for breathability, based on the manufacturer's rating:
 
8/10
Rate the jacket for fit:
 
8/10
Rate the jacket for sizing:
 
6/10

I'd recommend sizing up if anything for sleeve and body length.

Rate the jacket for weight:
 
8/10
Rate the jacket for comfort:
 
9/10
Rate the jacket for value:
 
10/10

How easy is the jacket to care for? How did it respond to being washed?

Machine wash 30 degrees.

Tell us what you particularly liked about the jacket

The performance and excellent visibility.

Tell us what you particularly disliked about the jacket

Nothing.

Did you enjoy using the jacket? Yes

Would you consider buying the jacket? Yes

Would you recommend the jacket to a friend? Yes

Use this box to explain your score

For the super-low price, this really is an exceptional jacket.

Overall rating: 9/10

About the tester

Age: 43  Height: 170cm  Weight: 60kg

I usually ride: Marin Point Reyes 29er  My best bike is: Giant Anthem X1

I've been riding for: 10-20 years  I ride: Most days  I would class myself as: Experienced

I regularly do the following types of riding: commuting, touring, club rides, mountain biking, audax