The 'Black-Ice' from Leader is a  good quality Mandolin gig bag with all the features that you need to protect your valuable instrument:-  

This 'Leader' padded bag has the following quality features:-

• Heavy black nylon outer
• 10 mm Internal padding
• Smooth nylon faced inner to protect instrument against scratches
• Fully sewn piping on all outer edges
• Padded carry 'grab' handle
• Doudle adjustable rucksack type shoulder straps
• 3.5" (8.89CM) Wide 'comfort carrying pads' on each shoulder strap
• 'Cross stitched' on all strap anchor points 
• Double zip pullers
• Zipped outer accessory pocket
• Silver script  'Black-Ice'  logo

(The photograph shows two 'Black-Ice' mandolin bags ...to show the viewer the front and back of the bag)

Internal Dimensions;

Length: 74 cm

Width at widest point: 34cm