While not available at stores in North America, Sleek products can be easily accessed by their online shop (and the shipping is *actually* cheap to Canada/USA!). If you’re lucky enough to live in the United Kingdom, you can pick up Sleek palettes at Superdrug which is where I picked up this Au Naturel palette when I was in London two years ago. With a ton of matte shades alongside shimmers, this palette packs the right amount of punch and variety for a neutral palette.
Enjoy the swatches!