✨UNLEASH THE MAGIC: Prepare to be amazed as these 4 colour-changing slimes work their magic! They transform their hues when exposed to UV light or heat, adding a captivating element to playtime. Our set includes 2 heat reactive and 2 UV reactive putties for an immersive experience. ✨INDIVIDUAL TINS: Our putty for kids pack contains 4 individual pots of smart putty to keep your slimes fresh and prevent drying out. Measuring 8 x 8 x 2 cm, these compact tins are perfect for on-the-go fun and ensure you can enjoy your slime for a long time. ✨SENSORY FUN: Stretch, squeeze, and pull this bouncy putty to your heart's content! It's an ideal sensory toy suitable for all ages, providing a satisfying tactile experience. Whether in the classroom or as a desk accessory, these fidget toys will make you the envy of everyone. ✨FULL SET: Get ready to unleash the full potential of your UV reactive slimes! Our kids putty slime includes a mini UV torch for each UV reactive slime, totalling 4 in all.