I went for a run in May and halfway through I was able to drain about 250ml of liquid out of the elbow of each arm, the reason there are so many holes punched in them is that the material is virtually a complete barrier!
@Sainsburys_Ed started
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I went for a run in May and halfway through I was able to drain about 250ml of liquid out of the elbow of each arm, the reason there are so many holes punched in them is that the material is virtually a complete barrier!