I've used this product a few times and it seems very durable, it won't slip off my hand if the strap is tight enough. The velcro gets a bit uncomfortable in use but that's to be expected and it sweats a lot under the bag but that's also to be expected. Sweat doesn't affect the strength of the pouch, it doesn't smell or anything, it just dries out between uses. Overall I think this is a good product.
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