Just received mine for my Custom One Pro. The velour pads do not fit 100% well but it does fit nicely.

The change increases quite an amount of treble while reducing the punchiness of bass, for my case it is perfectly fine as such is my preference

The pads affect isolation and sound leakage as well... but I guess velour pads always have worse isolation when compared to leatherette ones. And they are comfy, really suitable to be worn when the weather is hot. Well, in term of pricing this pair of velour is worthy indeed.