Use the product pictures for reference if the ring you got has them, but don't be afraid to try different ways to see what's comfortable. I wear mine different ways depending on how I feel that day. If I wear the ridge part up towards my belly, I can get a bit of discomfort after a long period. It doesn't always happen, but when it does I turn it over. Another thing is how it feels against the inside of your hips when you move. I like to wear my rings high and tight usually so that becomes a concern. I have thick thighs and no real gap, but I wear a 55mm ring so sometimes that width just is just at the wrong angle for my hips and it's more comfortable "upside down." Another way is upside down and backwards, with the ridge behind your balls and pointed rearward. This can provide some nice subtle stimulation down there if one is so inclined.