Stomvi Quad Case
STOMVI QUAD CASE
Measuring 23”(58cm) wide, 15”(38cm) tall and 8.5”(19cm) deep, it features a hard polymer shell with foam interior, backpack and shoulder straps, integrated music pouch (interior 15.5″X 12.5″X 0.5″), adjustable interior partitions, mouthpiece pouch, and 2 carrying handles. Empty, it weighs only 8 pounds(3.65kg).
It will fit 4 standard length trumpets or a combination of C, Bb, piccolo, and D/Eb. It can also be configured to hold one standard large trumpet, a flugelhorn with a bell diameter up to 6.6 inches (16.75cm) and a piccolo trumpet in a rather compact safe hard shell case. It will fit in the overhead on large aircraft. On smaller aircraft it will most likely need to be gate checked.
https://www.youtube.com/watch?v=MR-dBWxNAlE&t=6s