A softer chastity device?

My littlest one loves to climb. Always scaling up daddy! I’m looking for a cage that feels softer, isn’t too noticeable, and won’t likely injure him or me while we roughhouse.

Do you have any thoughts on the Bon 4 versus Birdlocked silicone models? Do they actually count as “soft”? My wife (and myself) want to lock up more frequently these days. Steel and hard plastic haven’t been working out so well lately. I’d appreciate feedback on other softer cage types.