Because Flexitoys are sized to fit comfortable in a child's hands, they are easy to snap and hinge together. Flexitoys have always been synonymous with stimulating children's creativity in open play. With FLEXIBLOCKS® and FLEXISWIVELS®, anything is possible, from creating a structurally simple, jaw-snapping alligator, to assembling a colossal, sophisticated expansion bridge. The FLEXILINKS® make other major brand blocks work with Flexitoys. The impressive CLASSROOM SET is packed in a large, durable container for easy storage. Classroom Set - 740 Pieces: 320 large and 200 small Flexiblocks, 160 Flexiswivels, 24 Flexilinks, 12 Flexiwheels, 12 Flexibears, 12 axle blocks, Storage Basket and Instructions.