Expandable Waterproof Travel Backpack Umbrella Function: Thermal insulation

Function: Thermal insulation

Colors: Blue and white pinstripe

Function: Leisure

Warmth: Thickened faux fur material provides excellent insulation for cold weather

Capacity: 20L / 30L (varies by model)

Expandable Waterproof Travel Backpack Umbrella Function: Thermal insulationOverview Vacuum Compression: Innovative compression technology maximizes space efficiency for travel essentials Expandable Design: Flexible capacity adjustment from 56L to 75L for versatile packing needs Waterproof Protection: Oxford cloth material with sealed seams ensures durability and weather resistance Multi Function Organization: Dedicated compartments for laptops (up to 16 inches), documents, and accessories Ergonomic Comfort: Curved shoulder