FURminator FURflex Head for combing underpants for dogs M Head to FURflex. It is intended to comb sub-section for medium-bred dogs (weight 9-23 kg) and fits the universal handle (available separately). All hair lengths. The BladeComfort Edge is made of stainless steel and is tailored to the animal's natural body shape. In a safe way, it reaches through the layer of the covering hair, combing understitch and dead hair, does not cause damage to the skin and hair. The FUREjector button allows you to easily remove hair from the tool. FURflex reduces the lineing up to 90% with regular use!