-Convenient adjustment : The two sides of the fin are equipped with quick adjustment buttons to adjust the size easily. The quick release button can keep the length of your strap, and press the button you can take off the fin . No need to adjust the strap again when you use it Open adjustable design : The heel adopts an open design, which is suitable for more sizes. It can share the device with family or friends. The internal fixed pad can keep the shape of the heel when stored. Take it out when using Comfortable to wear : The soft TPR material ensures good comfort when wearing and using. It can be used with bare feet. PP material is more durable and firm. The anti-slip pattern of the bottom can prevents slipping . Its more safe Suitable size for travel : Compact size, it can be easily put into the suitcase without occupying more volume. It is very suitable for travel and can also be used with diving socks Size : The size of the fin is suitable for adults and adolescents. The S / M value should be between 4.5 and 8.5, and the L/XL should be between 9 and 13. Please be assured purchase. Due to variances in monitor color, and lighting, the color of some items may differ slightly from the photographs About us: Vanessa Jane is a family-owned business based in Indiana. We sell only authentic merchandise from brand new to used, and list new inventory daily. Make sure to put us on your favorites to see what's new each day! We source all of our inventory from reputable sales channels This product is being listed under the First Sale Doctrine. It has been legally purchased. All images and descriptions are provided for informational purposes only, and we claim no copyright over them. No manufacturer warranty is implied. Due to variances in monitor color, and lighting, the color of some items may differ slightly from the photographs About us: Vanessa Jane is a family-owned business based in Indiana. We sell only authentic merchandise from brand new to used, and list new inventory daily. Make sure to put us on your favorites to see what's new each day! We source all of our inventory from reputable sales channels This product is being listed under the First Sale Doctrine. It has been legally purchased. All images and descriptions are provided for informational purposes only, and we claim no copyright over them. No manufacturer warranty is implied.