550ml DUOLE One Touch Double Drink Portable Vacuum Flask

The DUOLE One Touch Double Drink Portable Vacuum Flask (550ml) is engineered for everyday convenience, safety, and long-lasting insulation. Designed with a practical one-touch lid, it allows effortless single-hand operation—ideal for commuting, school, sports, and outdoor activities. The innovative double-drink structure combines a straw sip and direct drinking option in one bottle, adapting easily to different usage habits and age groups.

Crafted with a 304 stainless steel inner liner and outer shell, this vacuum flask ensures excellent durability, corrosion resistance, and food safety. The PP lid is lightweight, BPA-free, and precisely molded for a secure seal, helping prevent leaks during transport. Vacuum insulation technology maintains beverage temperature for hours, keeping hot drinks warm and cold drinks refreshingly cool.

With a compact and ergonomic size, the flask fits comfortably in backpacks, cup holders, and lunch bags. Smooth, rounded edges and a balanced body design enhance grip comfort, while the sturdy structure withstands daily wear and frequent use. requirements.