Some brands/models wear out faster. I logged many, many miles wearing Castelli Donna gloves (probably got me thru at least 5K miles, possibly more). A pair of PI gloves (can't remember the model) lasted only a month, but the new PI gel-vents I bought this spring are much more durable. I like Hincapie gloves, too, as they are holding up well. They aren't as padded as the gel-vents, though.