Snap Svg Slider

I wanted to further experimentation with Snap SVG and masking. I used photos from online just for experimentation so please go and see originals on their actual website https://www.humnutrition.com/ ( and buy things ;) The rollover image is a personal one though. If you want to get a better idea of how it was built check out the working file on codepen. Please note the main image is different but still just a google image used for experimentation!