Designed for both Range & Field use these Data Book Folders have been produced as I could not find the perfect solution for training. The MTP Folder holds A5 ring bounded inserts and has pockets for pens, Whizz Wheels and note books. It can be opened and used without exposing the Data Sheets to the elements. It also offers a covert folder effect that when opened using the flap extentions, can be used for target sketching and or target information. External Dimensions closed are as follows: L 250mm x W 210mm x D 40mm Opened: L 250mm x W 450mm x D 20mm Internal Data Sheet size : A5 Complete with Two Sided plastic wipeable Slate Cards: A5 Cards: Data on Rifle Truing the Ballistic Curve Tremor 3 Reticle Data Single/Multi Target Data Sheet A6 Card: Spotter Card/Wind Calling A5 Transparent Trace: Horus Tremor 3 Reticle Erasable fine Permanent Marker Pen. External Dimensions closed are as follows: L 250mm x W 210mm x D 40mm Opened: L 250mm x W 450mm x D 20mm Internal Data Sheet size : A5