5X warmer than the average cotton sock

Heat Holders ULTRA LITE® socks are non-binding and provide relief for cold feet due to circulation problems

3 Tog rating

the list goes on

stylish look and are made with Heat Holders® luxurious HeatWeaver® lining for softness

Men's ULTRA LITE™ Base Layer Zip Top Size:XL 5X warmer than the averageHeat Holders Men's ULTRA LITE Base Layer Zip Top is a light weight thermal base layer ideal for everyday cold. DUAL BRUSHING Supersoft HeatWeaver yarn is carefully brushed both inside and out to maximize warmth and softness. PERFECT STRETCH Our knitting technology and attention to detail produce the perfect stretch for freedom of movement and fit. FLAT COMFORT SEAMS Our carefully finished flat seams minimize bulk to create a comfortable non chafe fit,