316 Stainless Steel Vacuum Cup

Product information:
Color: sling bullets [black-500ML], sling bullets [Green-500ML], sling bullets [Blue-500ML], sling bullets [pink-500ML], sling bullets [purple-500ML]],
Insulation Performance: 6-12 hours
Material: 316 stainless steel
Function: household, portable, vacuum, heat preservation, customizable, drop-resistant, temperature measurement