Opening sizes -oval vs round

[Hermie225]

This may be a silly question, but, is there a difference in size between round opening shells and oval opening? If I had a 1in round and a 1in oval would it be considered the same? I’ve noticed all the shells I have are round opening and I’d like to give my hermies some more variety and get them a new wardrobe

[wodesorel]

Oval openings need to be a little bigger to match the space that a round opening provides for their abdomen. The larger the shell, the bigger the difference becomes.

[Hermie225]

Ok awesome good to know, thank you!! Ordering my big guy some 1 1/8th - 1 5/8th round, and Naples offers a pack of oval opening in ‘jumbo’, 1 1/4- 2in I think might work out okay?
My oh my these big beautiful shells can come with a HEFTY price