Global School Bags Market Size, Share, Growth Analysis By Product Type (Backpack, Messenger Bag, Duffel Bag, Tote, Satchel, Laptop Bag), By Age Group (Preschool (3–5 years), Elementary School (6–11 years), Middle School (12–14 years), High School (15–18 years), Adults), By Distribution Channel (Offline, Online), By Region and Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Statistics, Trends and Forecast 2025-2034