Stainless steel, PS plastic; This Eco Responsible product includes reusable drinking straw with cleaning brush in case; Telescopic 304 Stainless Steel straw with Silicone spout is compact for using on-the-go instead of single-use, disposable plastic straws; Case includes Silicone clip-on lid; Brush comes inserted at Silicone spout end of folded straw and is made of Stainless Steel with Nylon yarn; Straw measures approx 8.25l x .03dia at full length (3.15l folded); Brush measures approx 3.5l x .025dia; Hand-wash only Wash before using; Twist-pull action opening; Product Size: 6 l x 0.6 dia.