The 50L backpack can accommodate a maximum 17.3-inch laptop, while the 25-liter backpack can hold a maximum 13-inch laptop. Note to wholesalers: 1: we are a factory for more than 6 years, accept a small amount of customized models, or customized logos, 2: We offer , will not put any invoices and promotional documents. More than 95% within 12 hours have the tracking code and update tracking info within 48 hours (excluding holidays) 3: if you are a wholesaler, please feel free to contact us. We will do our to help you solve the problem. 4: if you are , please do not hesitate to distribute our products, please contact us, we can offer videos, pictures.