DESCRIPTION An organizational solution for the spacious Faraday cage compartment inside the Waterproof Faraday Backpack or Expanded Waterproof Faraday Backpack. It allows you to neatly arrange and store your belongings, maximizing the functionality of the backpack's interior space. Compatible With: Waterproof Faraday Backpack, Expandable Waterproof Faraday Backpack This product is not signal-blocking KEY FEATURES Compatible with Faraday Waterproof Backpack, Expandable Waterproof Faraday Backpack Three Compartments for organization Open slip-in pockets (Non-signal blocking) Velcro closure to hold your laptop or belongings in place SPECIFICATIONS Materials & Trims Exterior: Semi-rigid neoprene Lining: Semi-rigid neoprene Dimensions External: 17.7 x 11.8 x 6.3 in (45 x 30 x 16 cm) Internal Use: 16.14 x 11.4 x 5.4 in (41 x 29 x 13.7 cm) Volume: 20 liters Weight: 1.08 lbs (.49 kgs)