Completely compatible with TSTAK modules and PTA kits. Thick and sturdy with a rigid construction for maximum strength and resistance to wear and tear. Adjustable closing buckles and removable dividers to customise to specific needs. See-through zippered pocket for plans and documents. Shoulder Strap & Handles Ballistic Nylon Construction Polyethylene Base Hook & Loop Opening 8 x Internal Elastic Loops, 2 x Left, 2 x Right, 1 x Back, 1 x Transparent Zip & 4 x Internal Pocket(s) Sturdy Waterproof Base Easy Carry Vertical Handles Shoulder Strap & Handles Ballistic Nylon Construction Polyethylene Base Hook & Loop Opening 8 x Internal Elastic Loops, 2 x Left, 2 x Right, 1 x Back, 1 x Transparent Zip & 4 x Internal Pocket(s) Sturdy Waterproof Base Easy Carry Vertical Handles