Above-zero freezing temps are still dang cold. You might not be working in negative temps, but the cold will still take a toll if you aren t protected. The ChillShield Bib Overalls feature lightweight AirBlaze insulation for protection in temps from 40°F down to 10°F, so you can keep the cold out and get to work.Tough days won t wear this gear down. The entire ChillShield Collection features abrasion-resistant panels in high contact areas to prevent snags and tears during a rough day at work. Long shifts don t make you unravel. Get gear that won t either.Sizing Instructions: For the most accurate fit, take your measurements over the base layer of clothing you intend to wear with this RefrigiWear gear (such as thermal underwear, jeans or a sweatshirt) and refer to the size chart for this product.