Color-Shifting Marshmallow

NeeDoh Mello Mallo

Shaped like a soft rounded marshmallow that shifts color when exposed to sunlight.

$5.99 vibrant color selection
Select Color: Pastel Yellow/Pink
Select Size: Regular (2.25")

About the Mello Mallo

Mello Mallo brings a fun little trick to the table; it actually changes color once it sits in sunlight for a bit, then shifts back once it is indoors again. Shape-wise, it looks just like a marshmallow, soft and rounded, and gives the same slow, doughy squish the brand built its name on.

Kids find the color change part genuinely fun to watch, almost like a small science trick built into a toy. It works as a fidget at home or school, and the sun feature gives it a bit of extra novelty compared to the plainer shapes in the lineup.

Specifications

Material UV-reactive thermoplastic shell, non-toxic slow-rise compound
Colors Sun-shifting pastel shades (Pink, Yellow, Blue)
Sizing About 2.25 inches tall, easy to hold
Age range 3 years and up
Care & Cleaning Wash with warm soapy water. Avoid leaving in direct hot sun for extended days.

Frequently Asked Questions

How long does the color change take in sunlight?
It happens within a few minutes of direct UV sun exposure. Indoors, it returns to its base color shortly after.
Does the color change wear out over time?
Like most photochromic/UV-sensitive materials, the effect can fade slightly with heavy, long-term exposure to sunlight, so store it indoors.

Customer Reviews

4.8
★★★★★
Based on 122 verified ratings
Olivia G. ★★★★★

"It changes from yellow to pink in seconds outside! My kids are obsessed with bringing it to the park."

Lucas B. ★★★★★

"Looks exactly like a jumbo marshmallow. The texture is extremely soft and the sun-shift works perfectly."