Ultra-tough 600 denier outer fabric Heavy-duty zips Large 30ltr central storage compartment Anti-puncture, water-resistant & abrasion-resistant base Modular lightweight load carrying (MOLLE) system on front and side Separate laptop compartment with front, rear and centre padding. Fits most laptops up to 15.6″ Yellow inner fabric for assisted tool-finding in low light Ventilated back with ergonomically designed padding Ventilated & padded shoulder straps 4 x d-rings for additional attachments Made using up to 20% recycled materials Dimensions:Overall: 42cm(w) x 50cm(h) x 20cm(d)Outer side pockets: 15cm(w) x 22cm(h) x 4cm(d)Front pocket: 27cm(w) x 32cm(h) x 3cm(d)Main storage area: 32cm(w) x 49cm(h) x 14cm(d)Laptop compartment: 30cm(w) x 44cm(h) x 3cm(d) – Fits most laptops up to 15.6″ Unladen weight: 2.1kg Tools and backpack content not included. Measurements are approximate.