Designed as an end Bag for Rogue or Cascade, 3-D 32". Every Wenonah canoe has enough built-in flotation to keep it afloat if filled with water. However, if swamped in whitewater, a canoe must do more than just float...it must float high to avoid submerged rocks. We strongly recommend supplemental flotation bags in whitewater of Class II or above. Constructed of nylon and PVC.