Check the listing for details. MRE Tray Pack, Blueberry Pastry, Unitized Group Ration (UGR). Condition: New. Listed at 18.95 USD. MRE Tray Pack (UGR) - Blueberry Pastry (Unitized Group Ration) MRE Tray Packs (UGR) are used by the US military for field kitchen applications when feeding large groups of combat and support soldiers. They are packed in large, shelf-stable, flexible, and sturdy poly trays. This tray contains 37 oz of fully cooked, ready-to-eat Blueberry Pastries and includes 18 servings. Key Features: Ideal for feeding larger groups and families. Each tray measures 10" x 12-1/2" x 2". Stackable design for easy storage in food closets, cupboards, pantries, and tight spaces. Ready to eat straight out of the tray - great for Scouts, camping trips, and emergency use! Best taste when eaten within 10 years, with potential for longer shelf life under ideal storage conditions. Experience the convenience and reliability of military-grade MREs!