The tubing on the Signature Pro is also positioned differently on the side of the pump base to give moms more tubing length. (lansinoh.com)
At larger tube lengths, because of shape of the curve of absorption vs. wavelength, the transmission decreases rather slowly with the amount of CO2. (realclimate.org)
(If we pick Elon Musk as the new Richard Branson everyone wants to meet, then you might want to make a pneumatic tube length pitch instead of an elevator one.) (entrepreneur.com)