Heavy duty packsacks made of supple laminated fabric and useful features. In addition to durable fabric, the Fold Drybag Endura is built with sturdy aluminium carabiners to lock the roll-top closure. These allow the roll-top to be closed conventionally or vertically by clipping into the lateral daisy chains. The oval shape keeps the bag stable when lying on its side and also stows easily in a kayak's bow or stern compartment. The slim shape and numerous attachment points allow easy attachment to the exterior of a backpack. The integrated Exped FlatValve simplifies and speeds compression.