Due to its versatility, the ThermalFlex continues to be one of Sun Mountain's best-selling pieces. ThermalFlex is a soft, mid-weight layer that provides outstanding comfort and freedom of movement due to its 4-way stretch and quiet nature. For 2019, Sun Mountain has upgraded the zipper to a YKK Vislon zipper, which just makes a great product better.
- Soft polyester shell with added spandex
- Comfortable and quiet, with significant 4-way stretch
- Deep-cut zipper for easy on and off
- Locking zipper pull