The bag made of high quality Nylon with polyester lining.High quality zipper with WITZMAN logo. 1 bag 3different usage options for backpack, duffel bag, tote bag.This backpack meets the maximum size allowed by IATA flights,can be fitted overhead and under-seat, is ideal for a weekend trip, business trip. Can hold your 17 inch laptop, 2 sets of clothes, shoes, water bottle, umbrella and other items. Travel backpack is large capacity enough for vacation, weekend getaway, overnight trip…