Amazon has AmazonBasics Microfiber Damp Mop Cleaning Pad with Stripes, 18 Inch, 12-Pack on sale for $32.94
Shipping is free w/Prime
12-pack of microfiber damp mop heads with stripes for thoroughly cleaning bare-floor surfaces
Primarily made of polyester and nylon; microfiber material pulls in and traps dust and dirt
Integrated scrubber yarn helps clean extra-stubborn spots; durable pad designed for repeat use; machine washable
Connects to microfiber mop frame with hook-and-loop belt for easy on/off; microfiber mop frames and handles sold separately
Measures 18 inches; backed by an AmazonBasics limited one-year warranty