I was very excited to try the new model of the ASU after going through five pairs of the current model in the last 18 months. The sizing has changed drastically. The size 13 I ordered seems to be almost a full size smaller than the current model and is too small for me to run in. The upper material is much less breathable, to the point you can barely feel any air flow when trying to blow through it. The eye stays have been extended about 2 cm from the current model and the extra length is not needed. The new model is 23 grams heavier in the same size as the current ASU. The padding around the heel is a positive improvement. The upper seems overbuilt with the heavy Terrex overlays on the upper. With the advancements in shoe technology it would have been easy to cut weight and make improvements to the current version, but these have clearly gone backwards. The 7% increase in weight for the premier race shoe is shocking. Maybe version three will be better, but waiting until 2028 is a long time ago