Watch creativity blossom with this Plus-Plus Learn to Build: 400-Piece Glow In The Dark Set. FEATURES: Create colorful flat mosaics or work in 3D to make more intricate builds. Mix and match any Plus-Plus set to bring more ideas to life!, 400 pieces including Black, Neon Orange, Neon Pink, Neon Green, Neon Yellow, and Glow in the Dark pieces. Black Baseplates and a Guide Book for building to spark creativity! Each piece measures .75" x .5", Plus-Plus empowers children with free explorative play as they encourage fine motor skills, logic, creativity and imagination all without the use of screens. Part engineering, part art, with a bit of math and a whole lot of FUN!, Made from high quality BPA-free and phthalate-free plastic. DETAILS: Age: 5 years & up, Spot clean, Plastic, Imported, Product weight: .95 lbs. Size: One Size. Color: Multi. Gender: unisex. Age Group: kids. Material: NONE.