Premium Quality 100% Polyester Construction: Crafted from durable, long-lasting polyester to withstand daily wear in school or travel. Large 18" Size for Maximum Capacity: Generously sized to fit books, laptops, gym clothes, and more—great for upper-grade students. Lightweight Design at Just 1 LB: Strong yet easy to carry, offering a comfortable experience without unnecessary bulk. Spacious Main Compartment with Smooth Zip Closure: Provides secure storage for all school: essentials including large binders and tech accessories. Comfortable Padded Back Panel for All-Day Wear: Soft padding enhances comfort and provides back support during long school days. Adjustable Shoulder Straps for a Custom Fit: Easily adapts to students of different heights and sizes for even weight distribution. Front Pocket for Easy Access to Small Items: Great for storing pencils, phones, snacks, or personal accessories separately.