Thank you for viewing the "FELLOW Surf Boots, Split-Toe Type, 3.5mm, 30cm, Thermal, Fleece-Lined, Quick-Drying, New". Brand new, unused. Size: 30cm Thickness: 3.5mm Very soft, easy to put on and take off, easy to move in, and warm. The size is a bit too large for me, so I am selling it. Thank you.