An inflatable web is disclosed. The web includes a first film and second film ply sealed together via a plurality of generally transverse seals. The transverse seals define first and second inflatable chambers. The inflatable chambers are inflatable with, and contain, a fluid. The web defines a separation region extending at least partially between the first and second inflatable chambers in a substantially transverse direction across the web and configured to facilitate separation of the first and second inflatable chambers. The separation region includes a tear initiation feature that facilitates tearing of the web to separate the first and second inflatable chambers. The separation region includes a tear propagation line at least partially longitudinally offset from the tear initiation feature, and close enough to the tear initiation feature that force imparted to the web via the tear initiation feature will tear of the web through the tear propagation line.