3/8" Black Surfboard Leash Attachment by Leashlok Hawaii®. New 3/8" Leashlok Hawaii Attachments are made with a Polyester webbing that has a 3800 lb breaking strength. Polyester webbing is superior to the old Polypropylene webbing and stretches less, is more resistant to rot and mildew, has a higher strength rating and a softer feel in your hands. New webbing is made from a proprietary formula and is not affected by most chemicals, sunlight, oil, salt, water, fungus or moisture and the color and logo are actually a thermal dye technology which is very durable in all conditions. Please remember to replace your Attachments and Leashes yearly to avoid breakage.