Women's Spandex Swimwear: Shop by Style, Detail & Fit

Spandex (elastane; Lycra is the best-known brand) is the stretch engine of every modern swimsuit — the fiber that lets a suit hug, move, and snap back. Used at 10-25% blended with nylon or polyester, it is the difference between swimwear that fits and fabric that merely covers.

Higher spandex content means more compression, better recovery, and a more secure fit — which is why shaping suits and sport suits push toward the top of the range. But spandex is also the most chemically vulnerable fiber in the suit: chlorine, sunscreen, body oils, and heat all attack it. A suit "worn out" has usually lost its spandex long before the base fabric fails — the bagging, sagging, and transparency of an old suit are spandex death, not nylon death.

Buying by Percentage

Under 10%: casual, will bag. 12-18%: the standard fashion-suit range, good for a season or two of regular use. 20%+: shaping and sport territory, maximum hold. If a label hides the percentage, assume the minimum.

Extending Spandex Life

Every care rule for swimwear is really a spandex-preservation rule: rinse immediately, cold water only, no wringing, shade dry, rotate suits. Sunscreen goes on skin first, suit second. A suit whose spandex is gone cannot be revived — prevention is everything.