Hard plastic sleeve that fits all the cups so you can put one of the silicone cups in it and have a rigid surface to hold on to while pouring.
The sleeve is 3d printed out of a hard plastic so it won't flex when you grab it. When done pouring you can pull the used silicone cup out and put in a clean silicone cup so you only need one sleeve for all your cups. The sleeves are being printed from different colors of plastic so the one you receive might be a different color than what is in the picture.
Please contact us if you are unhappy with the product.