Trendhaus Good Feelings Glow-in-the-Dark Stickers - 3D Butterflies /12 Three-dimensional luminescent stickers in the shape of butterflies. During the day, they absorb light and release it in the dark. The set includes 4 butterfly-shaped figures (3 different sizes, the largest measuring approximately 9 x 6.8 cm) and double-sided stickers. The stickers can be attached to the wall, ceiling, or elsewhere. Warning! Not suitable for children under three years old, contains small parts and poses a choking hazard.