This is the Trident Heavy Duty Cordura/Mesh Duffel Bag

Features:

• Easy to Transport: The Duffle compartment collapses into it's own zippered pocket
• Durable: Heavy-duty Cardura material 
• Open: 30 x 16” diameter
• Closed: 2.5x16” diameter 
• Weight: 1.25 lbs

The duffle portion zips into it's own pocket for easy storage. It is lightweight . It is great as is or as a spare mesh dive bag.