Total suspension of the instrument on injected foam cushions; removable inside accessories pocket; four bow holders; trap for a Kun style shoulder rest; shells made of the Bam Hightech technique - a triple-ply structure made of high performance materials (ABS, Airex foam, another type of ABS); outstanding protection and ultralight weight; two comfortable neoprene anti-slip backpack straps with security screw hooks; side handle; subway handle; two combinations latches; male/female airtight seal; anti-slip and anti-wear rubber patches on the bottom outer shell; external A4 sized music pocket