I've forgotten where I bought these. They're not stiff inside and are easy to walk in. My ankles aren't thin, but the zipper closes properly. ○ Immediate purchase welcome. ○ This will be sent via Mercari's anonymous delivery service, so please register, confirm, and change your address in advance. ○ There may be changes to either Yu-Yu Mercari Delivery or Rakuraku Mercari Delivery when shipped. Thank you for your understanding. Thank you.