New, patented split ring plunger virtually eliminates coffee "blow-by", for a robust yet "mud-free" coffee. Crystal-clear carafe is made of BPA-Free copolyester. Insulating EVA sleeve easily removes for clean up. Double-wall insulated lid stays in place while brewing for maximum brew temperature. Wt: 10.8 oz. Personal Java Press: Includes 20 oz carafe and a separate 17 oz insulated mug w/sip-it top. Carafe nests inside for a compact unit. Mug made from BPA-free Infinity clear polypropylene.