The Scientific Anglers System X Standard Fly Box's exclusive design is unique. With a Tapered seal and soft rubber gasket the Scientific Anglers System X Standard Fly Box will make sure you have a water tight closure around the whole box. The Scientific Anglers System X Standard Fly Box floats to ensure that your box doesn't disappear when dropped. Features:Floats high and dry.Opens from either side.See-through lid clearly shows flies with box closed.Streamlined latch maintains seal.Easy operation.Moisture can't get in, so flies stay dry.