Professional 16.9 oz Vacuum Insulated Flask This premium stainless steel vacuum flask offers superior thermal performance with 6-hour heat retention and 12-hour cooling capabilities. Constructed from food-grade 304 stainless steel with double-wall vacuum insulation, it maintains beverage temperatures while ensuring safety and durability. The 16.9 oz capacity (1.4x standard soda can) provides generous volume for coffee, tea, or water. Features include a leak-proof twist-off lid design that requires proper clockwise tightening for optimal insulation. Dimensions: 10" height with 3" diameter base. Ideal for commercial applications including travel, office, and home use. While dishwasher safe, hand washing is recommended to preserve the vacuum seal. Note: Please verify cup holder compatibility as the 3" base may not fit all vehicle holders. Perfect for tea brands and importers seeking high-quality, temperature-retaining beverage solutions for discerning customers.zq20260205091502