Black Diamond Forearm Trainer

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Good for beginners to improve grip strength. The workout comes without noticing when you're eating this all day long.

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Fits well in a medium sized grip. Works well either when warming up the legs on the way to the crag or for muscle maintenance.

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Fairly stiff, ok for a 6b-7 climber.

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Exactly what a "stress donut" is. A nice thick rim so that the fingers bend naturally and the palm receives the force evenly. A beginner's "must have" for those who embrace compressive strength, a stimulant and initial warmth for the office day.

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A good product for warming up. You can influence the challenge with your own grip. However, it does not offer very high degrees of difficulty, but just right for warming up.

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Maybe a bit pointless though.

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It could be a little stiffer, but it does keep your hands warm.

ok

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Comfortably soft and sturdy. Works

Great quality