The Complete Guide to Men’s Spandex Swimsuits A style-by-style tour—from mainstream favorites to daring micros Spandex (elastane/LYCRA®) changed men’s swimwear forever: it stretches, snaps back, sculpts, and lets designers cut bolder shapes without sagging. Below is a practical field guide to every major silhouette, what it’s good for, how it fits, and who tends to …