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You should choose your climbing shoes based on 2 criteria : level of skill and use
1. Level Of Skill
You can find 2 shoe shapes depending on the level of skill
For Beginner To Experienced
You will choose a flat shape
For Experienced To Expert
You will choose an asymmetric and more or less cambered shape depending of the precision level you want.
2. Usage
2 levels of stiffness are proposed depending on the uses
For Indoor Climbing And Bouldering
You will choose a rather souple slipper
For Big Wall And Multi Pitch
You will take a stiffer sole