# Wearable Period Athleisure Thinx Turns Leakproof Protection into Everyday Shorts By Mursal Rahman | Written with AI assistance | Published 2026-10-06 | Fashion Source: Trend Hunter, https://www.trendhunter.com/trends/period-shorts References: [prnewswire](https://www.prnewswire.com/news-releases/thinx-introduces-butterfly-shorts-redefining-what-period-underwear-can-look-like-302899059.html)  Thinx is expanding wearable period athleisure with Butterfly Shorts, a style that combines [leakproof period protection](https://www.trendhunter.com/trends/modibodi) with an [athletic-inspired silhouette](https://www.trendhunter.com/trends/hybrid-short) designed to be worn as [everyday apparel](https://www.trendhunter.com/trends/fresh-athleisure-collection). Rather than functioning solely as an undergarment, the shorts provide up to 12 hours of protection and feature breathable Coolcore mesh fabric with an absorbent gusset suitable for overnight use. Available in sizes XS through 4X, the $56 shorts are designed for activities ranging from workouts and travel to errands and casual outings. Moving period protection into visible athleisure gives Thinx an opportunity to serve consumers beyond conventional underwear occasions. The hybrid design can expand the brand into adjacent apparel categories while encouraging customers to view period products as part of their everyday wardrobes. Building on a similar teen style also allows Thinx to reach adult consumers with an established product concept. Image Credit: Kimberly-Clark ## Trend Insights (Trend Hunter) - Score: 10.0/10 - Popularity: 100% | Activity: 100% | Freshness: 100% - Audience gender: 50% men, 50% women - Primary generations: Gen Z, Millennial - Top markets: North America ## Categories [Trend Hunter](https://www.trendhunter.com/trends) > [Fashion](https://www.trendhunter.com/fashion) > [Underwear](https://www.trendhunter.com/underwear) ## Key Themes ### Key Themes Behind This Trend - **Visible Periodwear:** Menstrual protection is moving from hidden undergarments into apparel meant to be seen, creating space for brands to normalize functional fashion across daily routines. - **Leakproof Athleisure:** Performance apparel with built-in absorbency blends comfort, movement, and protection, expanding the role of activewear beyond fitness-specific use cases. - **Inclusive Functional Fashion:** Extended sizing and everyday silhouettes reflect growing demand for body-inclusive products that combine utility, comfort, and style without medicalized design cues. ### Where This Applies - **Menstrual Care:** Product formats that integrate protection directly into clothing signal a shift away from disposable-only solutions and toward wardrobe-based period management. - **Athleisure Apparel:** Hybrid garments with absorbent, breathable, and leakproof features introduce new differentiation in a crowded category built around comfort and versatility. - **Travel Retail:** Compact, multi-use apparel designed for long wear periods aligns with consumer interest in practical clothing that reduces packing needs and supports mobility. ## Related on Trend Hunter - [Nautical-Inspired Sporty Swimwear Capsules](https://www.trendhunter.com/trends/sporty-swim-collection.md) - [Period-Proof Student Uniforms](https://www.trendhunter.com/trends/period-uniform.md) - [Reimagined Menstrual Care Portfolios](https://www.trendhunter.com/trends/pads-and-liners.md) - [Leakproof Everyday Underwear](https://www.trendhunter.com/trends/sleaks.md) - [Period-Friendly Dance Underwear Designs](https://www.trendhunter.com/trends/dance-underwear.md) - [Invisible Cotton Underwear](https://www.trendhunter.com/trends/knix-cotton-underwear.md) - [Multi-Use Performance Sport Shorts](https://www.trendhunter.com/trends/training-short.md) - [Breakthrough Menstruation Undergarments](https://www.trendhunter.com/trends/step-one-period-underwear.md)