The padded tongue and collar help prevent chafing, and inside is a memory foam insole with a lightweight, supportive EVA foam midsole. (geekwrapped.com)
The have many uses including collecting leaking milk, preventing chafing of sore nipple and extracting flat or inverted nipples. (expressing-mama.com)
It's best that shoulder straps have an adjustable chest buckle that keeps the straps on your shoulders while preventing chafing at the neck. (checkpregnancy.com)