Made of rugged, water-resistant 600-denier polyester. All backpacks have adjustable straps that are contoured and padded to ensure a comfortable fit; padded back panel adds extra cushioning. ‼️Excellent Used Condition! A few minor stains. See last pics. 📏Mini Size | Please see size chart above in pictures 🐈Pet & Smoke Free Home ❌❌EXCLUDED FROM BUY 2 GET FREE SHIPPING, UNLESS BUNDLED WITH A REGULAR PRICED ITEM❌❌