Whether for commuting or travel, the Roll Top Backpack Travel (27L) is always by your side thanks to its adjustable volume and smart features, such as a water-resistant outer pocket and a removable laptop case. Made from 100% recycled PET, it is waterproof, durable, and combines functionality, sustainable design, and a minimalist style. The Dope Dyeing process saves water, energy, and reduces CO₂ emissions. Specifications: Capacity of 27 liters and more (adjustable volume) Zipper at the end of the roll top to expand the volume 100% waterproof material Made from 100% recycled PET Water-resistant outer pocket (keeps contents dry even in heavy rain) Removable waist belt Adjustable chest strap Removable laptop case (fits up to 15") High-quality ergonomic back panel Individually adjustable shoulder straps Waterproof up to 25,000 mm water column Sustainability Commitment: WILI WILI TREE® products are made from 100% post-consumer recycled PET fabric, meaning they are produced from collected plastic bottles, which are processed into flakes, then turned into yarn and fabric. Dope Dyeing process: The yarn is dyed before weaving, reducing CO₂ emissions by more than 86%, water consumption by 98%, and energy use by 83% compared to conventional dyeing methods. Robust, durable, and waterproof: Thanks to its special coating, the bag’s exterior has a raw denim-like texture, offering high quality and easy cleaning. Manufactured according to BSCI & GRS (Global Recycling Standards). Our fabric manufacturer is also certified with: ISO 9001 (Quality) ISO 45001 (Occupational Health & Safety) ISO 14001 (Environmental Management)