MEASUREMENTS: ** note, when new it will be tight** Use less important pen to initially stretch the leather. 
Fits pens up to 10mm W (.4"W) and 153mm L (6"L). Perfectly fits the MB 149.
Overall Dimensions: 6.25" L (158.75mm) x 3 5/8" W (92.075mm)

Each pen sleeve is carefully made by hand, hand sewn. The edges are bevelled and burnished to a smooth finish that you won't want to stop touching. The inside is left untreated to provide a smooth suede surface for your pens..

LEATHER INFO:

Full grain vegetable tanned cowhide