Cabin BackPack 55x35x20-25 cm

Dimensions:
Length: 55 cm / 21.65 inch
Width: 35 cm / 13.8 inch
Thickness: 25 cm / 9.8 inch
Weight:  1,14 kg / 2.5 lbs
Volume: 48L
Brand: Enzosum

Cabin size BackPack accepted by virtually all the airlines.
After trying many backpacks on the market we found one with these measurements, which works well for divi:nity violin case. It has many pockets and a large mesh pocket. Inside the large compartment there is a space for a divi:nity or Trinity Violin Case, the divi:de BowCase and a lot of other items you may need in your touring life. 2 comfortable shoulder straps with a chest strap, and breathable mesh cushions. 
One should place the violin case diagonally both horizontally and vertically, with an extra side twist, using cloths to support its position. It stretches the bag a little but after filling it with cloths it looks fine. 

The size meets requirements of these airlines: 
Aerolineas Argentinas, Ari Belgium, Air Europa, Air France, Air India, American Airlines, Cathay Pacific, China Southern Airlines, Delta Air Lines, Emirates, Etihad Airways, HOP!, ITA Airwais, Jet Airways, KLM, Latam Airlines, United Airlines and almost all other airlines.