Fully waterproof index cards. The LETHALIFE Tactical index cards unlike other "all weather" index cards on the market, since they are actually waterproof, you can even submerge them without any damage to the paper! Made of polypropylene plastic, these are the toughest index cards on the market!
Perfect for Army Ranger School, Sapper School, ROTC, BOLC, OCS and all other military schools.