BoardingBlue Personal Item 18" Luggage Under seat for Spirit and Frontier Airlines Fits Frontier, Spirit Airlines as Personal item for under seat space Luggage Size: 18"x13"x8"Including wheels and handle, handle height 36". multiple pockets for IPad, water bottle, ticket & passport interior wet-pocket, and more for accessories. One back strap (A bag can be strapped on top of another carry on) Lightweight: 4.5lb (capacity 20lb). Luggage