Has anyone tried these or know where to buy them? I usually use Prince Duratac and like them pretty well but a friend had these Duraperfs on his racquet and they felt great. He gave me one and I really like it but apparently TW doesn't sell them, at least they don't show them. The overgrip is perforated and you can see the leather grip underneath but what makes them unique is a thin piece of spongy strip that goes the entire length of the wrap and provides the contour. The strip is underneath the wrap of course and provides a ridge that makes it real easy to grip. Great for when my hands gets sweaty, won't slip or twist at all on off center hits.