What fits into the ClipSlip? Small size: For many pocket knives under 10 cm length, like for example: Victorinox Pioneer Benchmade Proper Medium size: For many pocket knives up to a length of 11 cm. For example Perceval L08 Viper Key Otter Mercator Large size: For many pocket knives up to a length of 12 cm. For example Victorinox Wine Master Chris Reeve Large Sebenza Buck 110 Outer Dimensions: Large: 13 cm x 6,5 cm Medium: 12 cm x 5,5 cm Small: 11 cm x 5,3 cm