This easy to use product is a light weight, compact, one piece system that is pre-assembled and ready for use. It eliminates the need to spend time folding towels and preparing packs necessary for traditional Bowie Dick Test Packs. * Results are immediately visible and easy to read through the clear vial. * The indicator strip is easy to retrieve and can be stored as a permanent record. * Most important, the Dart Daily Air Removal Test is reproducible. The inconsistencies associated with traditional Bowie Dick Test Packs are eliminated.