 These
are made with an expensive stitching process that lengthens the
life of the shoe, bends easily, and can be repaired. It allows
for a more complex sole design than cheap methods - in this case
the Tredair® sole made of up-market, crack-resistant
plastic, a porous insole board and an injected layer of quality
bungee. Most soles on that claim to contain air will either contain
a bit of hard carpet under felt, which is good at moulding round
your foot-shape, or a springy chamber with less moulding ability.
The Tredair® sole combines mouldability and spring,
as well as resisting cracks and wearing very well. It is a sole
good enough to be sewn-on to these leather-free uppers. |