Poor design compared to the Tazon 5.  Foot slides around too much during training.  Instead of sitting down 'in' the sole as with the Tazon 5's, in these Cell Surin cross trainers, the foot sits on top of the sole.  Add to that the material stretches far too much, and it means your foot is always sliding during heavy lifting or any explosive movements.  TBH worthless as a cross-trainer.

Also the glued-in insert wears out in under a year... so am I throw out the whole shoe now?