I bought two other glans rings for "casual" wear. I found that sitting or tight pants made fit and comfort challenging. When I was aroused or hard, the fit was perfect, but sitting around with shrinky-dink, I didn't want to lose my ring! Walking around commando or in my kilt, my first measurements worked just fine but for all day wear, I needed a smaller size to insure I kept my jewelry on! I dropped down one size and got the 5-pack and am really satisfied with look, fit, and comfort. I've stacked with the bigger size on first and put the smaller size on last, then if I feel myself becoming aroused, I slip off the smaller rings and have a great fit with the bigger ring. (Jay says I'm a "grower," not a "show-er!" ) I am also experimenting with a tighter ring for when I'm hard. Jay was great with all his help and advise. I would love to see the Surge and Halfscrew in stainless steel. h(int, hint) If you are considering a glans ring for wear or performance, talk to Jay and get yourself a 5-pack and have at! I'm glad I did!