Feel unstoppable wearing Speedo's latest innovation developed by swimmers for swimmers. The Fastskin LZR Pure Intent 'Sonic Stealth' Jammer features compressive dual layers and ergonomic seam construction designed to connect key muscle groups for greater power return. Textured fabric zones target drag reduction so you get the very best from your swim, and the triple fabric construction with bonded seams has been designed to enable greater movement. The regular waist jammer style offers greater flexibility and may be preferred by breaststroke and IM swimmers. World Aquatics Approved.