Gradient 304 Stainless Steel Thermos Cup Outdoor Activity Lightweight Lock Bouncing Cup for Men and Women Couples with Gift Cups

Product category: vacuum flask Liner material: 304 stainless steel Thermal insulation performance: 6-12 hours Material: inner 304 and outer 201 Shell material: 304 stainless steel Style: bouncing cup, straight cup Function: General, household, portable, vacuum, heat preservation. Capacity: 350mL,500ml