BlenderBottle 2 in 1 Bottle Brush is 2 brushes in 1 The handle twists off to reveal a flexible mini brush to scrub those tough to clean straws spouts threads on lids Firm bristles conquer even the most stubborn residue so you ll never have to worry about today s drink tasting like yesterday s smoothie Non slip comfortable grip provides plenty of traction for tough cleaning action Specifications . Material Polypropylene Plastic. Weight 0 35 lbs