The 5 Large Rock-Like Pockets range from an ample one finger pad depth to two finger pads deep. The width offers two-finger pockets and three-finger pockets. They are positive enough for beginners to use on vertical where they will yield V2. That translates to a challenging hold for a beginner. They will be more challenging than the average jug to a beginner since your fingers are being isolated by the pocket design. The spinner screw makes these an excellent choice for playgrounds.