NBA Boston Celtics Travel Duffel Bag, 22-Inch, Black 1680D Ballistic Nylon Imported Dual purpose slip-through back pocket allows bag to slide over telescoping handle for easy transport or can be converted into an additional pocket when zipped closed US Domestic Carry-On approved Constructed with 1680D Ballistic Nylon providing the ultimate protection for valuables Top grab handle uses signature Opti-Aire padding for superior comfort and handle wrap closes easily from left or right for convenience Two 2" expandable side pockets provide added packing and organizing space Dual purpose slip-through back pocket allows bag to slide over telescoping handle for easy transport or can be converted into an additional pocket when zipped closed