The Trophy Angler Wide-Top Multi-Purpose Bag is extremely heavy-duty and designed as a total package multi-function and customizable bag!  The included gear & storage Velcro separators allow you to cater this bag to your needs.  Adjust it to carry and protect your 1-lb propane tanks & Li-Ion batteries while insulating them from the cold.    Also adjust the separators for tackle, gear or just about anyway you would need to make your day in the outdoors a complete success.  What a great multi-purpose bag!!!