KINK3D Cobra® chastity cages are produced in the US with some of the most advanced 3D-printing technologies on the planet. Cobra cages feature a patented geometry optimized for lightness, durability, and comfort. We focus relentlessly on design, so you can focus on staying locked for longer. Included Cobra N Cage (Learn more) Base Ring (Learn more) Lock & 2 keys Sizing The Cobra N cage is suggested for a flaccid length of 2-2.5" (5-6.5 cm). The Cobra N cage also comes in three different versions: Standard, Narrow, and Wide. We find the Standard works well for most people — but if you want a tighter fit, or you need some extra room, please keep reading below. Need help finding your size? Please review our size guides for Cobra cages and base rings, or email us for personalized advice. Cobra N Narrow & Wide The Narrow and Wide versions of the Cobra N are similar to the Cobra N Standard, except for their overall width and the size of the head area. If the Cobra N is the right length for you, then the Cobra N Narrow or Wide are worth considering if you have a thin or girthy penis, respectively. Note: The Cobra N Narrow has a slightly different shape compared to the Standard and Wide. The N Narrow isn't "all head" like the other two models. Rather, it has a short middle section before the head. This is in order to equalize the length. Related Items KINK3D base rings can be purchased individually here. And don't forget accessories, including the Airlock to go completely metal free or a randomized lock for more security!