Although it's new and unused, there was some dirt when I purchased it. I haven't used it in the ocean. I only tried it on once, but the size didn't fit, so I'm selling it. 【Features】 * Thickened side keel and softened blade tip for a firm flex. * Raised instep with an angle for smooth water drainage from the boot pocket. * Thickened and softened foot pocket sides to closely fit the ankle for improved hold. * Eliminates heel wobble during fin kicks, reduces distortion, and allows for smooth removal and attachment. - Brand: Aqualung - Size: M (25-26cm barefoot) - Color: White - Model Name: Warp Fin Mini Thank you for looking.