One standard article + One personal article of hand baggage is allowed on board and dimensions of 56 cm x 46 cm x 25 cm. It should be stowed under the seat in front of you or in the overhead bins.
For more details visit : https://www.SpiritAirlines.com.lb/english/Baggage/Baggage-Information
Spirit Airlines Checked Baggage
Spirit Airlines Excess Baggage