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. At miniature size, her strength level increases as her body's mass is compacted. At giant size, her strength and endurance increase geometrically with her height, reaching superhuman levels. Despite the advantages of giant size, Janet usually prefers to remain the diminutive Wasp, calling on her growth power only in times of extreme emergency. At miniature size, the Wasp grows a pair of translucent insect wings from her back, a result of genetic modifications provided by Hank Pym. These grant her the power of flight, at speeds up to 40 mph. The Wasp is able to harness and augment her body's natural bio-electric energy, releasing it from her hands in powerful electrical force bursts, which she calls her "stinger blasts", "stingers", or "wasp's stings". Originally, she requires special wrist devices to produce these, but again, Pym particle absorption allows her to create the ability unaided. The Wasp's genetic modifications also grant her the ability to sprout small prehensile antennae from her temples which allowed her to telepathically communicate with and control insects. However, this is an ability she rarely uses.