8g through 2g are single flare and the jellyfish is inside of a large ball front flare--there is no other way to get tiny handmade jellyfish into the plugs. The overall length is approximately 7/8" long with a 1/2" overall wearable area, roughly 7/16" once you include an o-ring. The ball flare itself is approximately 3/8" in diameter.
0g through 1" are regular double flare plugs with the jellyfish set back into the plug. The overall length is approximately 5/8" with a 5/16" to 3/8" wearable area.
The back is white, so it's like getting two pairs of plugs in one.