This strap-on can be used in many ways. Strapped on a man, it can be a nice harness or a way to DP your girlfriend. Strapped on a woman it could be used to hold a double sided dildo or two. If you attach all the straps to a couple of hair bands, you could even strap enormous things on that harness. Even very big dildos can be worn with this because of the additional straps. Also, the straps can fit almost anyone, you just have to tighten them around your waist and crotch and voil , perfect fit.
The only downside was mentionned by someone here before: the ends of the straps are a little sharp and can be uncomfortable. It dosen't seem to bother my girlfriend tho.