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Isadore Women’s Merino Membrane gilet



A stylish thermal gilet that keeps out wind and rain, but it's expensive and you can't stuff it in a back pocket

At every product is thoroughly tested for as long as it takes to get a proper insight into how well it works. Our reviewers are experienced cyclists that we trust to be objective. While we strive to ensure that opinions expressed are backed up by facts, reviews are by their nature an informed opinion, not a definitive verdict. We don't intentionally try to break anything (except locks) but we do try to look for weak points in any design. The overall score is not just an average of the other scores: it reflects both a product's function and value – with value determined by how a product compares with items of similar spec, quality, and price.

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The Isadore Women's Merino Membrane Softshell Vest is a great-looking, well-made gilet designed to protect you from the wind and rain. Using merino wool fibres on the inside and a windproof and waterproof membrane on the outside, it can take on the chilly autumn weather and keep you riding in style.

  • Pros: Waterproof, windproof and thermal
  • Cons: Front zipper is fiddly to use and has no locking mechanism, lacks versatility of lighter gilets

Isadore says it has designed the vest for cool spring riding and training in cold temperatures. It is constructed of what Isadore calls the 'finest' merino wool fibres on the inside, with a waterproof and windproof membrane to keep out wind and rain. This has a claimed DWR rating of 10,000mm and breathability of 10,000g/m2/24h. Being a natural fibre, the merino wool regulates temperature without getting smelly.

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The fit of the Isadore vest is great: figure hugging so no flapping about in the wind. I'm usually a medium and it was just right. The cut is slim, with ThermoRoubaix fabric on the sides.

Isadore Womens Merino Membrane Soft Shell Vest - riding.jpg

It's heavy at 286g compared with, for example, Rapha's men's Pro Team Insulated Gilet which weighs 145g, and the Women's Souplesse Insulated Jacket is 212g, with arms. The Isadore is not a gilet to squash in a back pocket when you get warm; it's too bulky for that.

Isadore Womens Merino Membrane Soft Shell Vest - back.jpg

It has a full-length bright yellow AquaGuard Vision zip, with a zip garage at the top. When fully zipped up, the soft-brushed fleece-lined collar sits nicely on the neck. The zip has a popper, two inches from the top, which lets you unzip and vent without having your chest completely exposed. On one ride when I need some ventilation, I unzipped 3/4 of the way down but without the popper done up, and the zip continued to open slowly by itself. The zipper is tricky to handle in thick gloves; it needs a pull loop for easier use.

Isadore Womens Merino Membrane Soft Shell Vest - popper.jpg

At the back there are two pockets. One has a waterproof zip and is quite roomy, with little compartment sleeves, one of which fits a phone nicely. The other is an open pocket, about the same size as you would find on the back of a jersey.

Isadore Womens Merino Membrane Soft Shell Vest - pocket 1.jpg

The shoulders have soft-brushed fabric panels which add reinforcement. If used for commuting, these panels would help pad out a bag strap and prevent wear.

Isadore Womens Merino Membrane Soft Shell Vest - shoulders.jpg

Other clever features include a drop-down tail which can be very neatly folded up and fastened to the inside with poppers when not in use.

Isadore Womens Merino Membrane Soft Shell Vest - inside and rain flap.jpg

There are also reflective details on the shoulder, around the rear pockets and tail flap, and the main zipper.

Isadore Womens Merino Membrane Soft Shell Vest - reflective back.jpg

On the single digit temperature days that we've had recently, I wore the gilet over a Roubaix Long Sleeve mid-weight jersey and it kept my trunk lovely and warm, the merino working well with the windproof membrane to keep things cosy and chills out.

A gilet is never going to keep you completely dry, but I found that water beaded off the Isadore vest in a light shower, keeping my trunk dry. I would happily wear it in light showers knowing that my core would stay warm and dry.

> Buyer's Guide: 9 of the best cycling gilets

At £160, the vest is pretty expensive – it's the same price as the Rapha Insulated Jacket, mentioned above, and you get sleeves with that! It's £20 more than the Rapha Souplesse Insulated Gilet, which has DWR proofing as well as being insulated (and is packable). Or you could spend less on the Aussie Grit Flint Women's Thermal Gilet at £95 for a thermal gilet, albeit with no waterproofing.

Aside from cost, the only other real drawback with the Isadore vest is that you can't stuff it in a pocket. I would have to think carefully about how much use I would get from it; for the price, my money would probably go on a jacket.


A stylish thermal gilet that keeps out wind and rain, but it's expensive and you can't stuff it in a back pocket test report

Make and model: Isadore Women's Merino Membrane gilet

Size tested: Medium

Tell us what the product is for

Isadore says: "The Women's Merino Membrane Vest is designed and constructed for movement with a sleek female look and highest comfort. This is a thermal Merino vest designed for women who need a bit of protection from the wind and rain."

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

From Isadore:

Finest Merino wool fibers on the inside (30% Merino / 65% Polyestere / 5% PU Membrane) - to protect you against wind and rain.

Water and windproof membrane on the outside keeps wind and water out /DWR 10,000mm), yet it is highly breathable (10,000g/m2/24h).

YKK AquaGuard Vision front and back pocket zip, 100% waterproof.

Waterproof small back zipper to keep the valuables inside the pocket safe.

Slim fit Womens cut with ThermoRoubaix® (85% Polyamid / 15% Elastane) side panels treated with DuPont (tm) Teflon® Fabric Protector to enhance the ability of the fabric to repel water.

Optional lower back extension.

Soft brushed lining inside the collar.

Reflective signs and logos added to enhance visibility.

Rate the product for quality of construction:

Really well made.

Rate the product for performance:

Does a great job of keeping you warm in chilly weather and keeping light rain off.

Rate the product for durability:

After a month of testing it looks as good as new.

Rate the product for fit:

I normally wear a medium and it fitted nicely.

Rate the product for sizing:
Rate the product for weight:

This is not designed to be a gilet you can get in a back pocket.

Rate the product for comfort:

Very comfortable to wear.

Rate the product for value:

It's expensive, and costs £20 more than Rapha's Souplesse Insulated Gilet.

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

I washed it at 30 degrees and had no problems.

Tell us how the product performed overall when used for its designed purpose

Does a great job of keeping you warm in chilly weather and keeping light rain off you.

Tell us what you particularly liked about the product

The merino wool fibres.

Tell us what you particularly disliked about the product

Lacks the versatility of a vest you can put in your back pocket if you get warm.

How does the price compare to that of similar products in the market, including ones recently tested on

It's £20 more than the Rapha Souplesse Insulated Gilet (£140), which is insulated and DWR proofed. Other options – with or without thermal or DWR properties, cost less – for example, the Aussie Grit Flint Women's Thermal Gilet at £95, a thermal vest but with no waterproofing.

Did you enjoy using the product? Yes

Would you consider buying the product? Maybe

Would you recommend the product to a friend? Possibly

Use this box to explain your overall score

I'm scoring the Isadore Vest 7 because overall it is a great vest, and does what it's meant to very well, but it is expensive and isn't as versatile as packable options. I would have to think carefully how much use I would get from it. If you what an extra thermal layer for your core, with windproofing and water repellency, it's a great option.

Overall rating: 7/10

About the tester

Age: 36  Height: 168  Weight: 60

I usually ride: Genesis Croix de Fer Ti  My best bike is:

I've been riding for: Under 5 years  I ride: Most days  I would class myself as: Experienced

I regularly do the following types of riding: touring, club rides, sportives, general fitness riding, mountain biking

Add new comment


Russell Orgazoid | 5 years ago
1 like

£160 for a gilet.

Tass Whitby replied to Russell Orgazoid | 5 years ago

Plasterer's Radio wrote:

£160 for a gilet.

£132 from Wiggle...

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