The Anemone Planter is designed to be filled with movement, beautiful & undulating on the outside, flat and sloped inside for easy drainage, transplanting and stacked storage. Pair them with the fanciful drainage trays yet for extra pops of color (separate listing). I've 3D printed over 20,000 pieces, these planters with well hidden layer lines and seams are some of the strongest, loveliest prints I've ever created. "Medium" planters on this listing have a 5.1 inch opening that slopes down and inward towards the foot of the planter. I recommend ordering in multiples of 9 for the most affordable shipping. "Large" planters have a 6.2 inch opening. I recommend ordering in multiples of 5 for the most affordable shipping. Check my other listings for smaller 3 and 4 inch sizes. The yellow is more like a chartreuse . The purple is muted. The blue is a blueish teal. And the green is a light pastel mint. All my prints currently ship without branding/labeling/packaging/price tags.