4 Things to Know About Mouse Pad Curling

Natural rubber stays flattest over time Natural rubber resists curling better than silicone or polyurethane, but only if the pad is at least 3mm thick and properly cured.

Cheap rubber pads may curl from poor manufacturing Under-vulcanized rubber leaves residual tack that makes edges curl during shipping. Letting them sit under a book for a day usually fixes this.

Silicone bases almost never curl Silicone is molded in one piece, making it nearly immune to curling. However, it feels grippier and offers less natural glide than rubber.

Polyurethane foam bases curl most often Common in desk mats and gaming pads, polyurethane foam curls because the top textile layer and foam expand at different rates.