US MILITARY 4 PIECE MODULAR SLEEPING BAG, SLEEP SYSTEM W/GORTEX. GENTLY USED STILL IN GREAT CONDITION. Be sure to add me to your. The item “USGI MILITARY 4 PIECE MODULAR SLEEPING BAG SLEEP SYSTEM GORTEX BIVY WOODLAND” is in sale since Tuesday, February 12, 2019. This item is in the category “Collectibles\Militaria\Current Militaria (2001-Now)\Original Items\Personal, Field Gear\Other Current Field Gear”. The seller is “armed_forces_supply” and is located in Cibolo, Texas. This item can be shipped to United States.