Featherlite Nova - Lower weight, more dynamic resistance. Featherlite Nova has only half of the weight of the standard Royal Putty but offers up to twice the dynamic resistance. This makes Royal Putty Featherlite suitable for patients with higher intensity and strength. The putty reacts to the speed of the intensity, low intensity provides low resistance but as soon as you increase the intensity the putty will respond with a higher resistance. All resistance levels can be mixed for added resistance. Since the putty is so light in weight we are providing this quality in volume, equivalent to 85 gram, 450 g and 2,25 kg.