Satch Pack Ninja Matrix is a 30‑litre ergonomic backpack designed for everyday school and commuting use. It stands out for its adjustable back length and organised storage that make daily carry comfortable and practical. Key attributes: Black | Polyester | Water-repellent finish | Reflective details for visibility | Breathable back padding | Adjustable chest and front straps | Padded hip belt with mesh pocket | Headphone outlet | Expandable external pockets | Padded laptop compartment (fits up to 14") | Internal organiser pockets | Two main compartments plus organiser pocket | XL side pockets | Reinforced base | S-shaped padded shoulder straps | Stands independently | Dimensions & fit: 30 x 45 x 22 cm (L/P/H) | Volume: 30 L | Weight: 1200 g | Adjustable back length for heights from 1.40 m to 1.80 m | Composition & care: 100% Polyester