Cooling and bug protection are the point of the Simms Men’s Bugstopper LS Shirt. It uses stretch-woven nylon with brrr° cooling fibers plus InsectShield® treatment for insect defense, and Simms lists UPF 50+ for sun coverage.
Simms’ brrr° tech focuses on three cooling effects: cooling minerals, wicking, and fast drying, aimed at lowering skin temperature and staying comfortable through the day. Storage is simple and functional with zip chest pockets, and there’s a built-in sunglasses chamois for keeping lenses clean.
This is the long-sleeve option when heat, sun, and insects are the main problems you’re trying to manage.
