Waterproof fabric. Polyester taffeta lining with Polygiene® freshness technology. Reinforced grab handle, top and side. Ergonomic and stowable, padded adjustable shoulder straps. Padded airflow back panel. Large main zip compartment with waterproof two-way zip. Laptop/tablet compartment, compatible up to 16". Water bottle zip pocket. Large zip accessories pocket. Adjustable sternum strap. Internal mesh zip pocket and key clip. Rolling luggage compatible. RFID blocking technology. Access for decoration. Capcity 25 litres, expanding to 35 litres.