First impression
The Radical Pro is strongly reminiscent of the Hoji models from recent years. Like these, the bright green boot has the well-known "Hoji-Lock" system for locking the shaft, which switches from walking to skiing mode (or vice versa) with just one movement and also fixes (or releases) the powerstrap and buckle on the shaft. The boot is quite lightweight, although the plastic is reinforced with fibreglass rather than carbon, and is compatible with automatic crampons and all pin bindings.
Tester & test conditions
I am 183cm tall and weigh about 80kg. I ski a lot and am mainly on ski tours. My feet are relatively normal in shape, i.e. they don't have any particular problem areas and are 28cm long. I tested the boot in size 27.5, which is, as expected, extremely short in terms of length. Despite adjusting the inner shoe, it is just a little too short for me, especially when walking on flat passages. It would be necessary to bulge out the shell or to use a larger shell. The latter would be difficult, however, as the shoe is already a little too wide for me even in the size I tested. Of course, it depends on the individual shape of your feet. Extensive fitting and, if necessary, adjustment should be a matter of course with ski touring boots. Overall, I was fine with the boot for the test in the tight size, but for long-term use, adjustments to the shell would be necessary for my feet.
I tested the boots on numerous ski tours in late spring 2021, using them with both a Dynafit Radical 2.0 and a Fritschi Xenic. The skis used were a Downskis CountDown 104 and a CountDown 104L. Typical for spring, the boots were mainly used in firn, hard snow and slush, with summer snow being added towards June. All in all, I was able to test the Radical Pro in a wide variety of conditions, although I have to admit that I haven't had a really good powder day yet.