Ten Twisted Helical PentaPipes NOTE!!!: SIZE5.5

The screw shaped interior allows easy putting-on-of ring, and easy removal, but while its in place its rock steady, and comfortable due to reduced contact area of ring with fingeration. InOtherWords, The sticking out bits that contact the finger are quite small compared to a flat ring that might sweat a little. Also, wearing the ring, it can be rotated for different feel, if youre aware of that kind of thing.