Hand-finished from premium ultra-durable 3.3 borosilicate glass with 2mm thick walls, this infuser resists thermal shock, odors, and staining. The food-grade 304 stainless steel components—lid, chain, and hook—are completely rust-resistant and flavor-neutral, preserving the character of every steep. Precision laser-cut microdots enable optimal water circulation and even extraction, while the included stainless steel drip tray and cleaning brush make maintenance effortless.