Making use of the cellular implantation of sub-atomic Pym particles, the Wasp possesses the power to alter her physical size, causing her body's mass to be shunted to or gained from an alternate dimension known as Kosmos. She is able to shrink to a minimum of several centimeters or grow to a maximum of several hundred feet. Smaller or larger sizes are possible but the exertion puts a strain on her body. Initially, these abilities stem from use of a Pym particle gas released from special capsules, and later biochemical augmentation by Henry Pym. Over time, however, her body absorbs enough particles to cause cellular mutation due to repeated exposure to Pym particles, allowing her to alter her size at will.