Finally, an elecrode positioning system with some serious thought behind it! Quik-Cap's highly elastic fabric provides a uniform fit over a wide range of head size and shape variability. Quik-Cap is available in five sizes with 32 to 256 channels. Sintered Ag/AgCl electrodes are recommended. Other electrode materials and channels counts are also available as custom solutions. Follow this link for more information and to order Quik-Caps