Arc’teryx Alpha vs Beta
Choose the Alpha for climbing-focused chest pockets, a helmet-compatible StormHood and pit zips. Choose the Beta for hand pockets and a low-profile hood. The current Alpha is slightly lighter on the manufacturer sheet, despite its more technical climbing layout.
Based on 275 included owner reviews. Owner evidence spans multiple revisions; current specifications do not describe every reviewed jacket.
The differences that matter
These jackets organize the same outer layer around different tasks. The Alpha places storage on the chest for access around a harness; the Beta uses hand pockets. The Alpha explicitly accommodates a helmet, while the Beta’s low-profile hood favors a simpler everyday setup.
Arc’teryx lists 358 g for the Alpha and 375 g for the Beta. That 17 g difference is less useful than knowing whether the hood and pockets work for you. Their different face fabrics and backers also mean they should not be treated as the same jacket with different branding.
Technical comparison
Alpha
Three-layer GORE-TEX PRO ePE with a 20-denier Hadron main fabric and 50-denier contrast panels. A helmet-compatible StormHood, pit zips, two chest pockets, internal storage and a RECCO reflector. The manufacturer lists a weight of 358 g. The manufacturer describes a regular cut.
Beta
GORE-TEX ePE shell with an 80-denier face and a C-KNIT backer. A low-profile StormHood, two hand pockets, an internal zipped pocket and a RECCO reflector. The manufacturer lists a weight of 375 g. The manufacturer describes a regular cut.
What do owners report?
Alpha
This product has 91 included owner reviews. Repeated strengths include low weight (33.0%; 30 reviews); staying dry in rain (25.3%; 23 reviews); and a comfortable fit (22.0%; 20 reviews).
Read the Alpha owner reviews for the full published findings and revision scope.
Beta
This product has 184 included owner reviews. Repeated strengths include staying dry in rain (29.9%; 55 reviews); a comfortable fit (24.5%; 45 reviews); and low weight (14.1%; 26 reviews).
Published drawbacks include sleeves that feel too long (8.2%; 15 reviews); noisy fabric during movement (6.0%; 11 reviews); and body sizing that runs too large (6.0%; 11 reviews).
Read the Beta owner reviews for the full published findings and revision scope.
These mention shares describe separate owner groups, rather than performance measured under the same conditions.
Which should you choose?
Choose the Alpha if helmet use, climbing storage and pit zips justify its layout. Choose the Beta if you prefer hand pockets and its regular fit works over your layers. Test the hood before buying rather than assuming every Arc’teryx shell has the same helmet coverage.