1.How to Luminous : Put the backpacks in the natural light or light irradiation about 20-30 minutes,LOGO will be shine about 4-6 hours,If the light is strong,luminous intensity and time will be increased,So the shine time will be more lasting.
 2. Backpack MATERIAL : Water-resistant High-quality canvas with complete lining, load-bearing but lightweight. Padded shoulder straps are wide with high permeability material, decreasing pressure of shoulder and neck, and keeping cool when you carry it for a long time.
 3. MULTI-FUNCTION COMPARTMENT: Backpack features multiple storage compartments and features for additional supplies and accessories as your laptop, Phone, Pad, pen, keys, wallet, books, clothes, bottle, passport and more, Built-in special channel for mobile phone charging.
 4. PRODUCT SIZE : 18×6×11.8 inch
 5. The Best Gift for Basketball Player Fans.