Experience the enchanting blend of vintage charm and modern elegance with the Ecosusi Retro Campus Backpack. Combining comfort with style, it securely holds your laptop while adding a touch of whimsy to your everyday adventures. The Aria Vintage Backpack for 15.6 Inches comes in two black versions: the Plain Version and the Studded Version. Here are the differences between the two:Plain Version:Simple design without additional metal studs.Suitable for users who prefer a minimalist style.Studded Version:Features metal studs on the top handle and shoulder strap attachments, adding a distinctive look.Includes metal washers inside, enhancing the backpack's durability and sturdiness.Ideal for users who appreciate metal decorations and require extra reinforcement in their backpack.I hope this helps you choose the right version for your needs. If you have any further questions about the product, feel free to ask.