The GAN 356 Air Pro 3×3 is essentially an non-magnetized GAN 356 Air SM that features a Numerical IPG core which is awesome! The Air Pro is super lightweight weighing in at only 68.5g and retains the amazing feel from the SM. The addition of the Numerical IPG core makes tensioning easier than ever! Including 4 different GES colors (blue, green, purple, yellow) you are able to adjust the tension to one of the 3 preset tensions with no tool required! This way you are able to achieve an even tension setting across all six sides of your Air Pro with ease. The Honeycomb design pieces have proven to assist with the distribution of lubricant throughout the puzzle and helps to prevent “sticking” or a lube build up.