These Staedtler Noris Coloured Pencils are made using the innovative WOPEX material to provide you with a smooth writing experience and break-resistant leads for less sharpening. The pencils have a classic striped barrel design with the lead colour matching the stripe colour so you can easily find the right one in your pencil case. Each pencil has a 3 mm lead size. The pencils are made using the unique WOPEX material that's a wood-plastic composite. They're designed to deliver bold, vibrant colours when you draw and colour with them. The barrel is hexagonal for a comfortable experience. You can use the pencils on different paper types. They are break-resistant so you don't have to worry about your lead snapping while you're creating. The wooden components of each pencil are PEFC certified. There are 36 different colours included in the pack.