These large hand held numbers - Red, odd numbers/ Blue, even numbers/ Yellow, Operations (not shown). They can be used in so many different ways, number formation, number ordering, counting and sorting and can be used both indoors and outdoors (not to be left outdoors). Pack of 30 includes 2 sets of numbers 0-9 and 2 sets of operations. Size: each number approx 180 x 150mm.