The climbing holds in the pockets category are all designed so that you can only have a small number of fingers in the holds. The pocket holds are generally very hard for the fingers and this type of hold is only for the exåerienced climber.
Pockets - Climbing holds where there is only space for a finger or two
If you have climbed for a long time, you can climb on pockets. They are fun and challenging as they demand great precision and great finger strength.
Some of the pocket holds have two or more holes. One can therefore match the holds with one finger from each hand.