How It Works: Through reflectors to maximize capturing the energy of the sun, the outer tube allows light rays to pass through the minimum reflection, while the inner tube will absorb heat energy warming up the water or food. Features: The portable solar oven allows you to cook everywhere. It can be used in any season and at any time as long as sunlight is available, per-fect for camping, hiking, RVing, fishing or hunting! Transportation is simpler than ever and cleanup is a breeze. Includes an ergonomic handbag for easy carrying anywhere. Parameters: Name: Solar Oven Expanded size: 61*23*22 cm / 24.01*9.05*8.67 in Vacuum tube specifications: diameter 70mm, length 60cm, inner diameter 55mm, capacity 1.3L. Net weight: 2.4KG Maximum temperature: 371 C Packing List: 1 * Solar Oven 1 * Portable Storage Bag 1 * Boiling Water Cover 1 * Cleaning Brush 1 * Oil Brush 1 * Clip