Jack Wolfskin's Astro Vent 24 is a 24-litre hiking backpack built for day hikes and outdoor adventures. Its Aerovent Core back system prioritizes ventilation and comfort on the move. Key attributes: Black | Phantom | Polyester | Aerovent Core for airflow and moisture management | Hydration-system compatible | Reflective details for low-light visibility | Trekking pole attachment | Padded hip belt | Integrated rain cover (stored inside) | Security whistle on sternum strap | Front pocket and internal pocket | Ventilated mesh back panel | Clear outdoor silhouette | Multiple compartment layout | Dimensions & fit: 55 x 32 x 9 cm | Volume: 24 L | Weight: 0.865 kg | One size | Composition & care: Outer: 100% polyester | Lining: 100% polyester