- Flack Lock Seams.
- Ultra Soft Microfiber.
- Nylon and Lycra.
- Made with 3 types of fabric to ensure total breathability these fast-drying HIIT Boxer Briefs were made for those who want to get serious about sports. A perforated microfiber leg and buttock allows air to move freely between the legs preventing that all-consuming chafe. A leg band stops your shorts from riding up whilst a thin waistband is soft and secure for those high intensity workouts.