Pantyliners are thin, absorbent pads used for feminine hygiene. The pads are similar to sanitary pads, except that they are lighter, smaller, and less absorbent. However, unlike sanitary pads worn during periods; liners can be worn on non-period days if you experience discharge or spotting. It is worn in the gusset of a woman panties. Some uses include absorbency for daily discharge, light menstrual flow, tampon, menstrual cup backup, spotting, post-intercourse discharge, and urinary incontinence.