The Trophy Angler Lithium ION Battery & Charger 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 Li-Ion batteries, battery chargers and 1-lb propane tanks 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!!!