95% match66°NORTH
66°NORTH and Black Diamond share nearly identical positioning in terms of style, silhouette, fit, and price segment.
Black Diamond
StyleGorpcore / OutdoorTechwearAthleisure / Sportswear
Known forOutdoor & technicalOuterwear
Black Diamond Equipment designs climbing, skiing and mountain gear from Salt Lake City: Camalot cams, carabiners, harnesses, ice tools, Distance and Storm headlamps, trekking poles, touring skis and bindings, plus a technical apparel line. It has been owned by publicly traded Clarus Corporation since 2010 and is the core of Clarus's Outdoor segment. Recent direction focuses on cutting non-core styles and rebuilding apparel, which grew 29% year-over-year in Q3 2025. Clarus sold sister brand PIEPS in July 2025 and, in May 2026, opened a strategic review that could lead to a sale.
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How Black Diamond fits
| Category | Runs | Shape | Length | Size advice | Confidence |
|---|---|---|---|---|---|
| Hoodies & sweatshirts | slightly small | slim athletic layering cut (Alpine Start / Coefficient style), close through chest and arms | long body and sleeves, often with scuba-style hood | Size up if you want to wear anything more than a baselayer underneath. | medium |
| Shirts & overshirts | slightly small | trim technical/travel shirt cut through the waist | regular to long body, tuckable | Consider one size up if you have broad shoulders or want a relaxed drape. | low |
| Trousers & pants | true to size | climbing-oriented - some relaxed cotton-blend styles, some slim softshell styles | inseams run long on many models; hemming or the shorter inseam option is common | Order your usual waist and check the inseam option, as legs often run long. | medium |
| Jackets | slightly small | alpine/climbing fit - trim body with articulated arms and helmet-compatible hood | longer sleeves and dropped rear hem for harness and reach coverage | Size up if you plan to layer a thick midlayer under a shell or belay piece. | medium |
| T-shirts & graphic tees | true to size | regular to slightly athletic, not boxy | regular to slightly long in body | Take your normal tee size; size up only if you dislike a closer body-skimming cut. | low |
Does Black Diamond run big or small?
Black Diamond fits slightly small. If you are between sizes or want to layer, take the larger size - most BD apparel is cut athletically slim. Black Diamond apparel is typically described as a technical, climber-athletic fit: trim through the torso with long sleeves and hem, so broader or non-athletic builds often end up sizing up while slim wearers find it true to size.
How does Black Diamond fit?
Black Diamond apparel is typically described as a technical, climber-athletic fit: trim through the torso with long sleeves and hem, so broader or non-athletic builds often end up sizing up while slim wearers find it true to size. Overall shape: athletic climbing cut - trim through chest, shoulders and waist with articulated sleeves.
How do Black Diamond hoodies & sweatshirts fit?
Black Diamond hoodies & sweatshirts fits slightly small. Size up if you want to wear anything more than a baselayer underneath. Shape: slim athletic layering cut (Alpine Start / Coefficient style), close through chest and arms.
How do Black Diamond shirts & overshirts fit?
Black Diamond shirts & overshirts fits slightly small. Consider one size up if you have broad shoulders or want a relaxed drape. Shape: trim technical/travel shirt cut through the waist.
How do Black Diamond trousers & pants fit?
Black Diamond trousers & pants fits true to size. Order your usual waist and check the inseam option, as legs often run long. Shape: climbing-oriented - some relaxed cotton-blend styles, some slim softshell styles.
Directional fit consensus summarized from public sources with AI — a starting point, not a guarantee. Confirm with the product's own measurements before buying.
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