Thank you for viewing. This is a CAMELBAK hydration pack for sale. The hydration bladder capacity is 1.5L. The capacity of the cargo space is unknown. I was using this until recently, and I have stored it at home after simple cleaning and drying. It is a used item and shows signs of use. It doesn't leak water if closed properly. I am an amateur seller, so there may be oversights. Please check the images carefully and purchase only if you are satisfied. The images may not fully represent the condition of the product, but this is a sale of the item as is. Please refrain from purchasing if you are a perfectionist or seeking an item in pristine condition. This item has been in someone's possession, so we appreciate your understanding. Returns are not accepted to prevent swapping. We kindly request that new users, those with similar profiles, and those with many negative reviews refrain from purchasing. I am a non-smoker and do not have any pets. After simple packaging (if the shipping size is borderline, we may ship with something wrapped around the product's box), we will ship anonymously. We may change the shipping method due to shipping costs and available materials. If you purchase multiple items from my listings, we can offer a discount on the reduced shipping costs. If you have any requests regarding delivery dates or times, please let us know in the comment section after purchase, and we will do our best to accommodate you. Thank you. Capacity: 1-2.9L