Why does Shopify sometimes have trouble with sizing of images?

[usdentalinc]

This seems to happen at random. I've played around with a few different lines of CSS to try to make the image adapt. Is it the image file type? I've tried different image resolutions and such. 

Is it nessecary for all images to be the same sizes?

[Kyle_Poieo-Dev]

Share a link to the page and I can take a look at what's going on compared to your other products.

[usdentalinc]

https://usdentaloutlet.com/products/sprintray-apex

A different item because I am working on current item. But same issue.