What Palm say :

An air bag and dry bag combined, designed to fit in the stern of a kayak. To use, simply pack the dry bag compartment with gear and roll down to seal, then inflate the integrated airbag compartment for buoyancy.

Usage: Kayaking, touring.

• Dual compartment envelope ? one for gear, the other for buoyancy 

• Heavy duty abrasion resistant fabric 

• High frequency welded seams 

• Self-purging valve 

• Securing eyes

Materials: Nylon 70D/PVC backing

Colours: Red

Size options: 18 L