官網有Carry-on Bags尺寸及說明: Including wheels and handles, carry-on bags must not exceed 22" L (55.88 cm) x 14" W (35.56 cm) x 9" H (22.86 cm) and personal items must not exceed 17" L (43.2 cm) x 13" W (33 cm) x 8" H (20.32 cm). https://www.jetblue.com/at-the-airport/baggage-information
Including wheels and handles, carry-on bags must not exceed 22" L (55.88 cm) x 14" W (35.56 cm) x 9" H (22.86 cm) and personal items must not exceed 17" L (43.2 cm) x 13" W (33 cm) x 8" H (20.32 cm).
https://www.jetblue.com/at-the-airport/baggage-information