Purchased directly from New Balance. This is New Balance's best-selling insole!!! Supportive Rebound Insole (RCP280) I intended to use it myself, but I threw away the packaging and kept putting off cutting it, so I never used it. It's been about six months since I bought it. Since it's a consumable item, I'd be happy if someone who uses it regularly is interested! M6.5-7.5 (24.5-25.5cm)