Discover iSwim
A refresher for longtime customers. Essential reading for newcomers.
From Start to Evolve to Fit, discover how iSwim developed its patterns and design philosophy.
iSwim Fashion｜Men’s Sexy Underwear, Thongs & Swimwear Brand Entry from Taiwan
Designed and made in Taiwan, shipped worldwide.
START｜Explore iSwim Fashion
Start with the Body
iSwim Fashion is a Taiwan-based men’s sexy underwear and swimwear brand. Since 2009, we have explored low-rise cuts, slim waistbands, thongs, pouch-focused designs, and various back piece structures, making men’s underwear not only an everyday item, but also part of body confidence and personal style.
We don’t design underwear by adding more fabric. We design it by making every piece of fabric work harder.
- Support Is Not About Tightness
Support is not about tightening the waistband, but about letting the waistband, front panel, and pouch share tension. - One-Piece Construction
One-piece construction allows fabric tension to move more continuously and helps the slim waistband become part of the support structure. - Fit the Body, Not Just the Pattern
We care not only about pattern height, but about where the piece sits on the body and how it feels when worn. - Back Pieces Matter
Back pieces are not limited to one shape. iSwim has long explored different hip lines and coverage proportions, making the back piece part of the overall fit system.
🎁 V-String Trial Coupon
Claim your coupon in the Member Center using code Vstring1003.
Valid for original -V series products, including V-string underwear, V-string swimwear, V-back thong underwear, and V-back thong swimwear.
Save NT$60 and experience a cleaner V-back silhouette.
Available from 10/03 through 11/03.
🎁 V 弦褲體驗券
會員中心輸入折扣碼 Vstring1003 領取。
僅適用於原型商品編號為 -V 系列的 V 弦褲、V 弦泳褲、V 型丁字內褲及 V 型丁字泳褲。
現折 NT$60，體驗更極簡的 V 型後片線條。
10/03 起可使用，使用期限至 11/03。
🎁 iSwim Monthly Member Days
iSwim will hold monthly member event days, making it easier for members to plan their purchases, claim coupons, and enjoy selected member offers.
Our monthly member days are planned as follows:
9th — iSwim Day: A monthly reward day for members at the beginning of the month.
18th — VIP Day: The main VIP member event of the month, with the strongest rewards.
25th — Member Day: An end-of-month member event.
Annual member coupons are now available for self-claim. Members can visit the Member Center to check their available annual coupon code.
Coupons can be combined with member event offers when applicable.
Event banners will appear one day in advance as a reminder. If another promotion is active during the month, these monthly events may be paused or adjusted. Please refer to the website announcement for the latest details.
For more details about iSwim men’s thongs, slim-strap underwear, swimwear, and semi-custom options, please visit the full iSwim Guide.
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