GONDUZ CHROMABALL™ UV & Heat Color-Change Bouncy Balls —2 Pack Science Toy, Changes Color in Your Hand + Under UV Light, EN71 Certified, Ages 6+

Meet GONDUZ CHROMABALL™ — the bouncy ball that changes color right before your eyes. Hold it in your warm hand and watch the color shift. Shine a UV light and it transforms again into something completely different. Two science reactions. One ball. Zero explanation needed.

The Science - CHROMABALL works using two real scientific principles: thermochromism (heat-activated color change) and photochromism (UV-light-activated color change). Each ball contains pigments that react to temperature and ultraviolet light — meaning every squeeze, every toss, and every UV reveal is a live chemistry demonstration kids ages 6 and up can repeat endlessly.

The Play -The 2-pack includes two CHROMABALL units in assorted reactive colors. Compare the reactions side by side, race them down a ramp, bounce them off walls, or simply squeeze and watch the pigment shift in real time. High-bounce premium PU construction means they play as hard as they look.

The Safety - Every GONDUZ CHROMABALL is EN71 and CPC certified — non-toxic, no phthalates, no BPA, no harmful pigments. Tested safe for ages 6 and up. The same certification standard trusted by schools, toy libraries, and parents who actually read the label.

The Gift - Compact, durable, infinitely repeatable — GONDUZ CHROMABALL is the science gift that never gets old. Perfect for birthday gifts, classroom science stations, STEM party favors, Easter baskets, and stocking stuffers for kids who want to understand how things work.

Key Features

DOUBLE COLOR-CHANGE SCIENCE —  Every CHROMABALL reacts to both body heat AND UV light, producing two completely different color transformations in one ball. Hold in your warm hand to trigger thermochromic shift. Flash under UV light for photochromic reveal. No two squeezes look exactly the same.

EN71 + CPC CERTIFIED — ZERO HARMFUL CHEMICALS — Every GONDUZ CHROMABALL passes EN71, CE, and CPC safety certification. Non-toxic pigments, no phthalates, no BPA. Safe for ages 6+ and designed for repeated hands-on play. The science is real. The safety is verified.

PREMIUM PU — HIGH BOUNCE + SATISFYING SQUISH — Each 6cm CHROMABALL is made from premium polyurethane that delivers genuine high-bounce performance alongside its color-change function. Durable, slow-rise squish feel, holds shape through extended play. This is a real bouncy ball, not a novelty that breaks after two bounces.

2 ASSORTED REACTIVE COLOR — SURPRISE EVERY TIME — Each CHROMABALL ships in an assorted reactive color. The color-change reaction means no two play sessions look identical — different lighting, different hand temperature, different reveal every time. Collect multiples to compare reactions side by side.

IDEAL FOR STEM EDUCATION — Use as a hands-on intro to light science, thermochromic chemistry, and physics. Perfect classroom tool, birthday gift, or party favor for kids ages 6–12.

SCIENCE GIFT THAT ACTUALLY WORKS — No batteries, no instructions, no prep. Hold it, squeeze it, shine a UV light, and watch chemistry happen in real time. GONDUZ CHROMABALL is the classroom prize, party favor, Easter basket filler, and birthday gift that kids actually use — and parents actually feel good about buying.