304 Stainless Steel Eggshell Cup U-shaped Cup with Cover for Business Office Double-layer Vacuum Insulation and Cold-keeping Handy Cup

Product category: vacuum flask Liner material: 304 stainless steel Thermal insulation performance: 6-12 hours Material: inner 304 and outer 201 Shell material: 201 stainless steel Function: thickening, household, portable, vacuum, heat preservation, anti-falling. Capacity: 380ml [plastic spraying], 380ml [painting]