Base 4.0 Crew QuickBooks 1mm H & 23

1mm H & 23

unbelievably soft to the touch

Footbed: Compression molded high rebound EVA

Premium canvas

The Kawika frames are a retrospective look at one of Maui Jim's original styles

Base 4.0 Crew QuickBooks 1mm H & 23UA Base 4. 0 is a men's baselayer built for extreme cold weather and lower activity. It uses a unique pattern that's designed to trap heat without adding bulk. Think long underwear, revamped for today's top athletes. UA Base 4. 0 is our warmest yet, locking in your body's heat to deliver extreme warmth in the extreme cold UA Scent Control Technology to keep you undetected in all pursuits Soft, brushed grid interior traps air against your skin,