[SAFE AND DURABLE] - Made of food-grade 304 stainless steel, harmless to your health. Built for long-lasting durability. [EASY TO USE] - Simply fill with tea, twist the lid slightly, and let it steep. Easily discard used leaves and rinse in warm water. Brew your loose leaf tea with ease. [HOOK DESIGN] - Allows the ball to hang from your teapot or pot handle and is easy to remove once your tea leaves have finished steeping. [SUITABLE SIZE] - Fits various types of teacups, mugs, and teapots with a diameter of 7 cm (including the edge). 【Note】: Wash the product after each use. Long-term tea stain residue can cause discoloration on the product's surface; the shine can be restored by scrubbing with detergent. Do not use crushed tea leaves, tea dregs, overly crushed tea leaves, or small tea leaves for soaking. This will cause the tea leaves to leak and affect your tea-drinking experience. Use compressed tea leaves, air-dried tea leaves, and steep tea leaves.