Temperature -5°C to 12°C
Weight 4/6
Insulation 5/6
Breathability 6/6
Water protection 1/6
Wind protection 4/6
Abrasion resistance 5/6
Compression 5/6
Polartec® Alpha®
Complete the look
Size Guide
Fit Guide
Product Reviews
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Submitted 8.12.2025
By Matej
Great
Probably my favorite Isadore apparel piece. I wasn’t sure if it would be a good purchase, so my expectations were low—but it completely blew me away. Polartec Alpha is simply amazing: breathable when you need it, and wind/cold-proof when you need it. At 182 cm and 90 kg, XL fits snugly. Paired with a long-sleeve jersey, it keeps you comfortable even in slightly above-zero temperatures. One thing I didn’t see mentioned anywhere: it’s very packable.Show full review -
Submitted 19.11.2025
By A.M.
awesome insulated vest
I usually wear S sized tops from Isadore (185cm / 81kg) , this is an M and it fits very snugly. The front insulated panel is not stretchy so keep that in mind, you might want to opt for a bigger size. I kept the M because I can still wear it without the vest being restrictive. Ideal in cold weather below 10C, keeps your core warm which is the most important. The two way zipper is very handy and the pocket is a great addition.Show full review -
Submitted 11.11.2025
By Marian Pissko
From Slovakia
Super vesta
Vesta je veľmi príjemná a teplá, som veľmi spokojný. Akurát je trochu menšia ako by som čakal, je dosť tesná, čo je OK, ale pod ňou sa do vreciek nič nezmestí, ale vesta má svoje tak to nevadí, ale vrecká sú dosť vysoko a teda sú ťažšie prístupnéShow full review -
Submitted 10.11.2025
By Michal
RNDr.
Dlho som hľadal skutočne dobrú vestu a konečne som ju našiel. Spĺňa všetky moje očakávania. Krásny štýlový kúsok do šatníka. Budem ju využívať aj pri iných aktivitách ako beh a skialpinizmus.Show full review -
Submitted 12.3.2026
By Johnny
Very warm
This is great for that extra bit warmth without needing a jacketShow full review -
Submitted 4.1.2026
By Florian
Great Jacket for layering wheter in the cold or in the sun
fits me just perfect in L (178cm and 73kg, with rather wide shoulders). Great design and very comfy. I love it.Show full review -
Submitted 26.12.2025
By Philipp
Best gilet for colder days
I love this gilet for how warm it is. Fits as good as other Isadore products. I wear size M and I am 182cm / 76kgShow full review -
Submitted 10.11.2025
By Thierry
Very nice, but thight
Its a very nice product, perfect for the autumn in Sweden. The only thing negative is that it's very thight. I usually use L, sometimes XL if i want to be loose. But this one, XL, is very thight.Show full review -
Submitted 19.11.2024
By Antoine M
Perfect
Was hesitating between this and the classic wind vest. Went for this one and zero regret, takes only a tiny bit more space when folded away but provides way greater thermal and wind insulation (had another wind vest before), perfect for climbing in the winter or when the temperature is changing during the ride. Paired with the Alternative LS baselayer and Light LS jersey, I can go to 5°C no problemShow full review -
Submitted 9.11.2024
By Peter Šinský
From Czech Republic
Great product, but too short on the back side
In cold weather conditions below 12 degrees I opt for this piece with a thicker winter jersey. The torso is kept warm, pockets are spacious for additional jacket, tools and some snack. I am quite short 1.7m and size M fits perfect, S was too short for me. The only one exception I have is the length of the vest on the back side. Even the bigger size M is too short and does not protect lower back properly. Additional 10cm and the product would be exceptional.Show full review -
Submitted 22.9.2024
By Felix
light uphill, strong downhill
amazing experience Stelvio downhill - held my body warm and comfyShow full review -
Submitted 20.3.2024
By Mark Cohen
Exceptional
I bought this on a whim, being a big brand fan. Exceptional fit (175lbs, 6'1, S) and warmth. Also a stylish piece with a racy, on-bike fit that I've reached for over and over in the Alps. Very cool kit.Show full review -
Submitted 21.11.2023
By Daniel Jaber
From United States
Alternative Insulated Vest, EXCEPTIONAL!
First ride today with this exceptional piece of Kit. Isadore has knocked this one out of the park, Exceptional warmth to weight ratio. Fit is spot on, just like the rest of Isadore Pieces that I have. Great work! I am 6'0 and 160 Lb. large fits perfectly.Show full review -
Submitted 16.11.2023
By Sebastian Ludwig
From Germany
Sebastian Ludwig
Die Weste fühlt sich sehr hochwertig an. Top Qualität. Bin 190cm und trage die MShow full review
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