Black Diamond – Coefficient Fleece Hoody

GR_June2022_Coefficient Hoody

Review by Tony Lourens

To be honest, it is difficult to know where to start with a review of the Coefficient – there are so many good qualities! You will know exactly what I mean when you put it on. If ever there was a light base or mid-layer designed specifically for climbing, then this is undoubtedly it.

It is beautifully designed: the cut is slim and refined, so when you put it on, it almost feels as though you haven’t got it on. It’s tailored in such a way that it practically feels like a second skin. It is also cut slightly longer on the hips, so it fits nicely beneath your harness, and the stretch in the fabric prevents it from riding up when reaching really high. The sleeves are also cut a little long, so there is also no riding there, and they culminate with very comfortable thumb slits, making it quick and easy to pull on an outer layer. But in my opinion, the pièce de résistance in the design is the low profile hood – it envelopes your head like a second skin. The elasticity of the fleece fabric and the elastic beading, gives it a remarkable fit – close, warm and totally unobtrusive – perfectly fitting beneath your helmet and coming right down to just above your eye brows.

Manufactured from 180 gsm Polartec Power Dry gridded fleece, the garment is soft against the skin, very breathable, durable and stretchy, and surprisingly warm for its weight. It has a full length zip, which goes all the way up to a high collar, sealing off your entire neck, right up to your chin. Fully zipped and the hood deployed, you will be perfectly cocooned, creating a nice warm seal against any draughts – the only part exposed being your immediate facial area. It also has a zipped chest pocket, which I find handy for stashing my phone, energy bar or a route description.

Designed as a mid-layer, the Coefficient can quite easily be used as a very effective base layer as well. Light, warm, comfortable, versatile and designed for performance, the Coefficient hoody is one of those rare pieces that deserve classic status. It’s just so well-designed and executed that you don’t want to take it off.

• Polartec Power Dry – gridded interior (180 gsm)
• Low profile, under-the-helmet hood
• Zipped chest pocket
• Lightweight stretch cuffs with integrated thumb loops
• Slim fit
Sizing: Small – X Large
Weight: 284 g

RRP: R2 749
Available from:

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