Expands up to 70 Liters BT Backpack Bag is Great for Travel and Business Purpose: Prune
BT backpack is an expandable bag that has an adjustable height and storage of up to 70 liters is great for Travel and business purposes. It also has a suitcase mounting strap that makes it great for leisure travel and business trips. It's fully waterproof with a full, 180-degree wide-angle opening. It has a magnetic buckle and good zippers to keep everything safe and secure. Finally, with a designated laptop storage space and a side strap pocket, this bag is best for travel purposes.