Target Bullseye Halloween Glow in the Dark Slime Tumbler Cup Sleeve (sleeve only, cup is not included) Fits BOTH 30oz & 40oz Stanleys (yes, I tried them on like they were prom dresses). Glow power = 10/10. Slime vibes = immaculate. - Brand new with tags - Perfect for flexing at night, glowing like the main character, and making your Stanley the star of the spooky season.