Sink drains include a sink strainer, tailpiece, and other components that channel water down drains in lavatories and kitchens. Sink drain strainers allow water to flow through drains freely, but capture dirt and debris to eliminate clogs. Stoppers and covers keep water from draining out of sinks. Sink drain traps, connectors, and extensions have curves so they can be positioned around parts under sinks. They seal out toxic sewer gases and odors and prevent them from escaping through drains and into dwelling spaces. Sink drain escutcheons fit on the outside of drain pipes and cover the opening around the pipe. Trap and pipe coverings fit over under-the-sink traps and pipes to keep them thermally insulated, protect them from impacts, stains, and chemicals, and improve aesthetic appearance.