These are particularly strong and easy to use by weaving the 2 prongs through the ... [SEP] I have really thick, smooth and silky Asian hair and normal bobby pins (especially the cheaper, weaker ones) always pop out or start to slip out after a few hours of wearing a bun. These are particularly strong and easy to use by weaving the 2 prongs through the bun and hair--have never had them fall out and my bun stays in all day! I would recommend them.