From Musilia:

Musilia engineered their cases to provide unsurpassed protection for the instrument and a new level of comfort for the player. Every detail of this case is build with a very specific idea: combination of light weight and high resistance. Musilia cases have been created to match the highest expectations of professional players.

Features- 

• Carbon Fiber
• Super Suspension
• Special Adjustable Padding
• 2 Bow Holders
• Pocket for Rosin and Strings
• Shoulder Strap can be used sideways as well backpack style

M Series are for Montagnana or other large pattern models of Cello. The M series is also known as the Universal Model. A wider range of adjustment of the interior padding system  which allowing the M series to accommodate the Strad model and the largest instruments as well:

• Height – 52 1/4″
• Upper bout – 16″
• Lower bout – 20″

Weight- 3.9kg