Shop › Incentive Spirometer AirLife Adult 4000 mL, 12/Case #001901A Image 1 of 3 Image 2 of 3 Image 3 of 3 Incentive Spirometer AirLife Adult 4000 mL, 12/Case #001901A $75.99 Easy to Perform Breathing ExerciseErogonomically Designed to HoldAdjustable Mouthpiece with Flexible Tubing1 way valve Quantity: Add To Cart Added! Easy to Perform Breathing ExerciseErogonomically Designed to HoldAdjustable Mouthpiece with Flexible Tubing1 way valve