it’s a fall treat 🍂

Here’s something (other than lattes) to celebrate with the change of seasons: our fall undie sale! Get 30% off select styles, including our new Teen Overnight Boyshort, with code HAPPYFALL.

2100 County Road, Neenah, WI 54956, United States

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HAPPYFALL promo code offer ends September 29, 2025 @ 11:59pm CT. This promotion is exclusively valid on select merchandise available on thinx.com. Discount applied against originally marked price. Cannot be combined with any other coupons, sales, discounts, or offers. Offer not transferable or redeemable for cash and cannot be applied toward previously purchased merchandise. Excludes taxes and shipping charges. Offer may be modified or discontinued at any time without notice. Exclusions apply.