Based on this product's specifications, here are some alternatives and similar models
Lens cap and protective housing case for Insta360 X5 by K&F (model SB10803)
Summary description:
Protective lens cap and housing case designed for the Insta360 X5 action camera. Manufactured by K&F (MPN SB10803), this accessory provides dust and impact protection for the camera lens and body during transport and storage. Suitable for everyday use, travel, outdoor sports, and situations where the camera needs reliable coverage to prevent scratches and dirt.