Thank you for viewing. The size is suitable for those with shoe sizes around 24cm. The opening is finished with a ribbed bind-off. It's smooth and stretches about 16cm without feeling tight. Material: 75% wool, 25% nylon. Can be washed in a net at a water temperature of 40 degrees Celsius or less. It seems that using fabric softener can damage the item. Please comment if you have any questions. There will be a smell specific to yarn upon opening. The item has been pre-washed. This is a handmade item by an amateur.