: Includes an extended "droptail" hem for extra coverage and raglan sleeves for better mobility.
: The top uses a "honeycomb" texture to create an Authentic Layer that traps air between the fabric and your skin, providing a natural barrier of warmth. It is highly effective for stationary or lightly active use in freezing temperatures.
: It has built-in thumb holes and a 1/4 zip mock neck for easy venting and temperature regulation.
The "45ZIP" (specifically the ) is an affordable, single-layer thermal base layer designed for cold to extremely cold weather during low to medium activity. Performance Review