Rubberized, soft touch feel Keeps liquids cold for up to 24 hours. Keeps liquids warm for up to 12 hours. Double wall, stainless steel mug. Vacuum insulated 18/8 food-grade stainless steel. Screw on acrylic lid with the option to use with or without the straw. Comfortable handle for easy carrying. Polypropylene black handle. Hand wash only.