Mega sand timer with moulded end caps and shatterproof plastic barrier to protect the inner glass.Sand timers offer a traditional visual demonstration of the passing of time.Easy for young children to understand and ideal for use in timed games for timing experiments & completing tests or to measure specific periods of time for activities such as reading creative writing or tidying up.TickiT sand timers are colour coded meaning those of the same colour provide the same length of time regardless of size.Size 300 x 150mm.