Hy !

Just one question:

would these skates do for kiteskating on a field (grass) !??

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They look nice, but how well they work will depend on what you plan to use them for. The wheels are a little small so don't take them into areas with rough terrain or uneven surface. Your speed will also be reduced by the small wheels as well as your ability to skate upwind. Additionally, you may have some support issues with the soft boots. Many have reported that soft boots do not support the ankle enough.

IMO: These skates will work well if you plan to kiteskate from time to time on even grass fields at moderate speeds (under 25mph) - no jumps.