Building blocks with a natural finish feature a lightweight design that’s safe to stack to towering heights, quiet when they tumble down, eco-friendly and an absolute blast to play with. Constructed with durable cork, these blocks feature surprising building characteristics that gives them more flexibility than traditional hardwood, such as increased friction and a slight sponginess. Included storage container allows easy storage when playtime is over. Building blocks are perfect for open-ended activity in classrooms, daycares or at home. 35-piece set is designed for children ages 3 and up.