SX For You Beginnerâs Harness is an evolution in adjustable strap-on systems. Comprised of 2 strong silicone support rings, there's no need to measure dildos ever again. Fasteners secure the support rings making SX For You Beginner's Harness compatible with all dildos - even extreme dildos! Durable constructed strap-on harness is for first timers and advanced players alike. The performance pad is constructed from velvety smooth faux leather and the adjustable straps are soft nylon for comfortable wear. SX For You Beginner's Harness fits up to a 47 inch waistline.