I have a pair of&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Tiger-Claw-Feiyue-Martial-Arts-Shoes/dp/B00MH2QMWO/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Tiger Claw Feiyue Martial Arts Shoes</a>&nbsp;and they're perfect for my rowing and kettlebell swinging but the super-soft rubber sole keeps on rubbing through so I have added an entire tube of&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Shoe-Goo/dp/B002L9AL84/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Shoe Goo</a>&nbsp;to the sole so that the shoe lasts a lot longerand it works!  It's not hard glue, it's hard rubber and it protects the heck out of the sole.