SkyBound Round Tree Swing Nets These beautiful, round black swing nets are designed to be hung from a strong tree branch or your existing playground swing set. Maximum length of ropes are 62 inches Made from tough, durable, plastic and vibrant colored nylon rope Top of ropes have a steel ring which connect to your own system (straps, buckles, etc. are not included) Maximum user weight: 200lbs ASTM Issuing Authority: SGS-CSTC Standards Technical Services ASTM Lab location: Ningbo ASTM Certificate #: NBHL1611015824TY-01 Certificate Issued Date: 1/16/2017