The extremely waterproof breathable eVent bottom allows air to escape as the sack is roll compressed. We also added an arched rolling stay that helps keep the top of the sack open while loading and shapes an easy to grab handle when sealed. The XL or Portage Packliner is designed to fit our Superior One portage pack.
(Validated on ProLite Scales)
100D Cordura High Tenacity Nylon
Forms a block shape when compressed that fits perfectly in your pack
Simply roll to compress. Air is forced out the eVent bottom.
Arched rolling stay keeps Bloc open while loading/unloading and forms an easy to grab handle when sealed
Designed to be used inside your pack and not as a drybag or haulbag