Christian Hedwitschak sends us these cases from GEWA as they fit his 40cm deep shell bodhrans perfectly - such as the GPS or MOS 40cm Bodhrans as well as the 40cm Light Line and Basic Line. They also will work with smaller bodhrans - both in diameter and depth though you will have a little extra "wiggle room". Common sense applies here... The case would dwarf a 30cm bodhran but something down to about 37 or 35 cm will work out fine. These cases provide a nice low-cost alternative to our handmade custom cases.