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Verdict: 
Overall, a good pair of compression sleeves/fair weather arm warmers for the bike
Weight: 
54g
Contact: 
www.x-bionic.co.uk/men/biking/road-bike/arm-warmer-no-seam/491872/detail?color=588077

Innovative and award-winning Swiss-Italian sportswear brand X-Bionic's Summer Light arm warmers-cum-compression sleeves are designed for mild days when you still want the benefits of compression without overheating. They work – but they come at a steep price.

The Summerlights weigh in at 54g on our scales and are possibly the most packed-with-innovation arm warmers I've ever come across, with expansion ribs at the elbow for free movement, air-guide ribbing that helps with air circulation around the whole limb, and Thermal Window technology on the inner arm to maximise heat dissipation. All this, and a completely seamless construction.

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Buy these online here

Fundamentally, the compression aims to reduce the vibrations you feel through your arms while out on the road, and I have to say that they do seem to work over the course of a long ride. It's important to pick the right size to get the most out of the compression, and I'd recommend following the fitting guidelines on X-Bionic's website instead of your normal arm warmer size, just to be safe.

Made of a series of fine yarns (80% polyamide, 10% elastane and 10% polypropylene), the fabric wicks away sweat very effectively, and possesses a merino-like quality, staving off morning chills yet keeping you cool when the temperatures reach the high teens. They offer sun protection too, but while they're made for summer months, I think they're equally at home on mild spring and autumn days when the weather doesn't quite call for the full Roubaix lining or a full-sleeve jersey that you might wear for a longer steady spin.

The yarns also wash well – I've yet to see any degradation in their performance or comfort following several trips to the washing machine.

>> Check out our guide to warm clothing for the winter here

With all this technology and thought gone into the warmers' construction, it's perhaps not surprising that X-Bionic has stuck with the general trend seen throughout its range and gone with a bold design. Available in white or black with the panels and features highlighted in varying shades of grey and X-Bionic's largely orange logo, the design will be a love-it-or-hate-it affair. In short, if you like your cycling clothes bold and distinctive, you'll probably like these.

This brings us to the cost – at £39 they're edging towards the more expensive end of the market for a set of arm warmers, and seeing as you probably won't want to be using them in the depths of winter, this limits their appeal to all but the most devout supporters of compression wear and enthusiasts of marginal gains.

Verdict

Overall, a good pair of compression sleeves/fair weather arm warmers for the bike

If you're thinking of buying this product using a cashback deal why not use the road.cc Top Cashback page and get some top cashback while helping to support your favourite independent cycling website

road.cc test report

Make and model: X-Bionic Summer Light Arm warmer

Size tested: L/XL, Arm warmer no seam,Black/Anthracite

Tell us what the product 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?

Designed for fans of compression wear who want to reduce the effects of road buzz on their arms.

X-BIONIC says:

Thanks to the use of extremely fine yarns, you can even take advantage of the benefits of X-Impact Technology™, Partial Kompression und ExpansionRibs™ on warmer days. Arm in the Light line also offer effective sun protection.

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

ExpansionRibs™

The knitted fabric of the ExpansionRibs™ folds apart based on the accordion principle, insuring that cold doesn't cool down the elbows. Even when sharply bent, the insulating effect is maintained through warm air stored in the interior. The flexibility of the ExpansionRibs™ and the elasticity of the yarn allow a frictionless freedom of movement.

Air Guides®

Work like spacers and borders along the Air-Conditioning Channel® for effective air circulation.

X-BIONIC® Thermal Window

The thermal window on the inside of the arm dissipates heat at a controlled rate. The fine knitted structure immediately ducts moisture away.

No Seam

Applying a new manufacturing process, this style can be made in one piece. That means no more seams. The fabric is continuous, allowing for a more uniform compression. Pressure is more comfortable and effective.

Rate the product for quality of construction:
 
9/10
Rate the product for performance:
 
8/10
Rate the product for durability:
 
8/10
Rate the product for weight, if applicable:
 
8/10
Rate the product for comfort, if applicable:
 
9/10
Rate the product for value:
 
6/10

£39 seems a lots for what is essentially a pair of non-winter arm warmers.

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

Very well – vibrations are reduced, and they provide a light layer over the arms for protection from cooler weather.

Tell us what you particularly liked about the product

The materials used – fabrics like this are very comfortable.

Tell us what you particularly disliked about the product

The cost...

Did you enjoy using the product? Yes

Would you consider buying the product? Yes – if I could find them on sale.

Would you recommend the product to a friend? Not if they were after a simple pair of arm warmers; only if their specific needs matched up with the product.

Overall rating: 7/10

About the tester

Age: 25  Height: 188cm  Weight: 83kg

I usually ride: Specialized Allez Sport  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: time trialling, club rides, sportives, general fitness riding,