In Stock Now! Our pinnacle in boot technology, the Kaiju blends Nike's unmatched footwear technology & innovative design. Full length phylon midsole with embedded Zoom Air Nike Free inspired technology Full length TPU external foxing Webbing lacing system with neoprene eyestay & flex notch Internal Flywire ankle harness Outlast temperature controlled liner & foot bed with new insulation package Heat moldable liner for custom fit