Extensive tests are carried out on Douai . They aim to ensure the product compliance with both national and international standards such as DIN, EN, BS and ANIS/BIFMA to name but few. Built-in a temperature controller, this product can achieve optimal heated comfort
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The manufacturing processes of Douai are strictly conducted. These processes include metal materials preparation, cutting, polishing, and mechanical assembly. This product provides all-day heat on a single charge
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Douai has been rigorously tested to assess the conformity of different parameters to quality. These tests include visual, chemical, and physical tests. This product allows users to enjoy outdoor winter activities longer than ever before
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Douai has undergone various tests. These tests include color fastness checks, dimensional stability tests, and accessory safety checks. This product simply requires a short charging time
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Douai is designed based on the scientific study of the efficacy of clothing. This study includes fabric breathability, washability, heat retention, stretchability, and so on. Its exterior shell is made of insulation materials, which can guarantee the maximum warmth
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that has been developed by our professional team offers great supports for the operation of . This product allows users to enjoy outdoor winter activities longer than ever before