"Mae'n anodd credu bod menywod ifanc yn gorfod colli diwrnodau o'u haddysg am nad ydyn nhw’n gallu cael gafael ar gynnyrch ar gyfer y mislif, neu fforddio talu amdanynt.
“It’s unthinkable that young women could be forced to miss days of their education simply because they can’t access or afford period products.