Tropicfeel Shelter Backpack backpack is the perfect article perfect for your trips. With an improved design and high performance characteristics, this backpack gives you the comfort and organization you need. Its ability to expand from 30 to 54 liters, and up to 66 liters with the complete ecosystem, allows you to adapt it to any type of trip. In addition, it is 30% lighter and 50% more resistant, which makes it lasting and easy to transport. Thanks to your weather -resistant materials, your belongings will be safe in any climate. Characteristics: Thermoforming foam of high quality with shock and lumbar support. 30% lighter 50% stronger expandable capacity: 30 to 54 liters Improved design Comfort in motion light travel even with advanced technologies incorporated recycled materials made with 100% recycled polyester and nylon 57% recycled