Aerodynamic backpack with a hard, water-repellent shell and 25L capacity. Includes an expandable compartment for a full-face helmet and a secure, padded laptop pocket. DIMENSIONS: 480 x 360 x 90 mm, 480 x 360 x 290 mm (extended) CAPACITY: 25 L or 50 L (extended) MAX LOADING: 5 kg Specifications: Outer shell: Black 900D Polyester with PU coating and water- repellent surface treatment Hard shell: 5 mm EVA (75% hardness) covered with black smooth PU for durability and impact resistance Padding: Black air mesh for shoulder straps and back panel – breathable and comfortable Inner lining: Grey 210D Polyester Compliant with REACH regulation (CE n.1907/2006) PFAS free High-density thermoformed EVA shell with PU coating for maximum durability Expandable zipped compartment for full-face helmet storage Padded laptop pocket (up to 17”) with elastic security strap Internal elastic pocket for small items Two adjustable straps with side- release buckles for secure storage Padded shoulder straps with adjustable chest buckle Breathable mesh back panel for better comfort Removable waist belt Front carry handle for easy transport