Based on this product's specifications, here are some alternatives and similar models
Vacuum flask Stanley 1 L Black stainless steel — 1 L capacity
Summary description:
Vacuum flask by Stanley with 1 L capacity and black stainless steel housing. Designed to keep beverages hot or cold during travel, work or outdoor activities. Compact 1 L volume for daily use, with durable stainless steel construction that resists dents and supports long-term thermal retention. Suitable for commuting, hiking and picnics.