Hubbard 6 Liter Capacity Lung Volume Bag, Set of 4 - Classroom/Educational Tools - HBO Satco 9W A19 A-Type 4100K

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Hubbard 6 Liter Capacity Lung Volume Bag, Set of 4 - Classroom/Educational Tools - HBO Satco 9W A19 A-Type 4100KThese are replacement bags for the Lung Volume Kits, the mouth pieces are not included. Lung capacity is a significant indicator of physical fitness. The lung volume kit gives students the opportunity to understand their own physiology more thoroughly. For grades 3 to 9 and ages 8 to 15 years.