WANDF For Spirit Airlines Personal Item Bag 18x14x8 Travel Duffel Bag Underseat Foldable Carry-on Luggage for Women（A-Denim Grey）
$9.99Make sure this fits by entering your model number.
SAVE YOUR CARRY ON CHARGES – Measures 17.7 x 12.6 x 6.3 inch, perfect fit personal item size 18 x 14 x 8 inch of Spirit Airlines & Frontier Airlines. It can be placed under seat to save your overweight charges.
25L CAPACITY – Enough to hold everything you need for in-flight comfort and entertainment. If you’re flying for overnight trip, this could easily be the only bag you need to carry.