Bolsnik Expandable Backpack is the only expandable backpack from 26L to 40L that combines urban design, rain protection, true ergonomics, and smart compartments — created for those who need mobility with freedom, style, and security, whether for everyday use or world travel.
Premium waterproof material. Laptop compartment for devices up to 17.3". Plus: external USB port, anti-theft design, and ergonomic comfort.
Fits what others can't.
Keeps your electronics safe from rain and prying eyes.
Take it to work or on a backpacking trip — it adapts to you.
Designed for those who value organization and comfort.
