TPU MATERIAL: Ruggest waterproof TPU material will protect your documents at all times. WELDED SEAMS & JOINTS: The watertight welded seams and joints will protect your paperwork from rain and splashes. RUST-RESISTANT CLAMP: Use this burly clamp to keep your documents in place while in the field. TWO ZIPPERS: The large opening with two water resistant zippers will open the field desk completely flat. PEN HOLDERS: The two exterior pen holders keep your writing instruments close and ready. HANG LOOP: Hang the Field Desk in your office or workspace for easy storage and accessibility. WEBBED HANDLE: Don't lose your grip with a tough back handle designed for extended writing comfort and security.