This trolley backpack is constructed from durable water‑repellent woven fabric. Adopts fine seam stitching and neat edge‑binding craft, paired with smooth heavy‑duty zippers. Built‑in retractable trolley system and silent wheels, with external USB charging port. Multi‑layer organized compartments, dual‑purpose design for rolling or backpack carrying. Sleek minimalist appearance, wear‑resistant for business commuting and short trips.