This is the synthetic upper, which featured a newly designed "X Skin" upper
This new upper featured dozens of tiny little grooves or dots that provided some texture throughout the upper and helped with the grip
With Nike introducing the dynamic fit "sock" collars, Adidas rolled out their "TechFit" technology, which featured a thinner and softer collar material to help with comfort and to provide a sock like fit
The Sole Plate:
A one piece hard plastic material was used, with half a dozen grooves throughout the boot to make the sole plate a bit more flexible
A triangular 3-D stud design was used, very similar to the Vapor XI model
There were also several smaller studs used to help with traction near the mid foot area
Notes and Comments:
The X15.1 was the newly renovated F50 model and had some similar features
Overall the upper had a great new technology that helped with the grip, while still staying lightweight
Parts of the boots were a bit thicker throughout, but overall the new sock liner material provided a more secure and comfortable fit
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