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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