**Product Specifications:**
**Brand:** GOLDEN KEY
**Product Type:** Insulated Lunch Bags and Lunch Box
**Models:** Blue Handheld Insulated Bag, Red Handheld Insulated Bag, Magic Anti-overflow Vacuum Lunch Box
**Features:**
- Vacuum insulation for heat preservation and freshness
- Stainless steel construction (304 grade)
- Tailless vacuum design for enhanced insulation
- Food grid upgrade for better food separation and preservation
- Independent compartments for separating and preserving food flavors
- Four-layer insulation structure for superior heat retention
- Temperature retention test results: 98°C+ after 0 hours, 75°C+ after 6 hours, 55°C+ after 12 hours
**Testing Standards:** Complies with Q/JYS1-2020 standards
**Capacity Options:** 1.7L, 2.3L, 4.0L, 5.0L, 7.0L, 9.0L, 12.0L
**Material:** 304 Stainless Steel
**Color:** Champagne Gold
**Model Numbers:** GK-MF1700T, GK-MF2000T, GK-MF2300T
**Additional Features:**
- Thickened insulation strap and cutlery set for convenient carrying
- Oxford cloth exterior for durability and scratch resistance
- Thickened aluminum foil lining for extended insulation
- Soup line indicator for safe filling level
- Pressure relief valve for easy opening
- Non-slip silicone base for stability
*Note: Product specifications are manually measured and may have a 5mm deviation. Testing results are indicative and may vary based on environmental factors.*
