18 months and up. Encourage relationships with nature through versatile play pieces like this set of Jumbo Sensory Leaves. Large leaf-shaped mats in various nature-inspired colors provide visual stimulation. Each mat is textured and includes a crinkle material that makes a satisfying crackle when squeezed or touched, inspiring deeper interest during tummy time or sensory activities. Includes 4 of each leaf shape. Larger leaf measures 14"L x 12"W x .2"H.