Size: 40mm diameter, with 2mm of thickness. Stretchy: These bands stretch up to 15cm. Colours included: 20 light blue, 20 purple, 20 brown, 20 pink and 20 navy blue. Ideal for: Holding all kinds of hair styles securely. Hair elastics: Get a 100-pack of elastic hair ties! 100-Pack Hair Ties | Living Social | Living Social