Basically you know how there's that underwear for kids that lined with super absorbent material for potty training? Picture that but less bulky and adult size. But also it's totally going to get stained so maybe buy a dark color
Popular alternatives to
INNERSY Women's Hipster Per...
AZMED Maternity Belly Band for Pregnant Women | Pregnancy Belly Support Band for Abdomen, Pelvic, Waist, & Back Pain | Adjustable Maternity Belt | For All Stages of Pregnancy & Postpartum (Beige)