The improved load-bearing equipment (ILBE) is a United States Marine Corps program that had included individual load carriage equipment, individual hydration systems and individual water purification.
Since the rucksack was the first component of the program to be issued to Marines, the rucksack is commonly referred to as simply the ILBE. The ILBE rucksack was designed to replace the long existing all-purpose lightweight individual carrying equipment (ALICE) and newer modular lightweight load-carrying equipment (MOLLE) packs.