training bra vs regular bra

What are the differences between training bras and sports bras? I'm not asking about the differences in their purposes but their designs and materials. - Quora

When to Replace a Training Bra – Bleuet

Do Training Bras Need to Be Broken In? - Yellowberry

Remember The Training Bra? What Exactly Was It Supposed To

What are the differences between training bras and sports bras? I

Should I, as a transgender woman (MtF), wear a sports bra to bed to help shield my developing breasts (crazy chafing) or will compression slow/hinder growth? - Quora