When it was first released, back in the early 80s, the X-Caliber set numerous benchmarks for innovation. The pioneering sole design features channels at the front to maximise flex and improve cushioning while the Quadra lacing system makes for a perfect fit when running.
US | EU | Japan | |
---|---|---|---|
UK 6 | 7 | 40 | 25 |
UK 7 | 8 | 41.5 | 26 |
UK 8 | 9 | 42.5 | 27 |
UK 9 | 10 | 44 | 28 |
UK 10 | 11 | 45 | 28.5 |
UK 11 | 12 | 46.5 | 29.5 |
UK 12 | 13 | 48 | 30.5 |