Grubs Boots Frostline High 5.0 Black M4/W5

The Grubs Frostline 5.0 High Boot featuring the TRAK™ sole with Hexzorb™ shock-absorbing technology. This sole has small lugs front & rear to provide good 'push off' grip and a prominent heel for 'braking' grip. The Frostline boot is an ideal choice for both work and leisure activities. Full Height for superior leg protection and warmth. INSU-FOAM ULTRA™ - Containing a polyester fleece lining combined with Grub's HIGHLOFT™ liner for ultimate in warmth and comfort. 5.0 TECHNOLOGY™ - A moisture wicking terry knit liner for ultimate dryness and stretch-ability. Removable 6mm NITROCELL™ footbed - A nitrogen bubble structure increases the cushioning and insulative properties of the foot bed SUPER-DRI™ lining Operate in Temperatures 85 to -5 Fahrenheit TRAK™ sole featuring Hexzorb™ shock-absorbing technology