Grub´s Frostline 5.0™ is insulated and 100% waterproof, with excellent grip, made for all day comfort. The Frostline boot is an ideal choice for both work and leisure activities, even in the toughest conditions.

• 5 mm Insu-Foam Ultra™ - gives all round foot comfort and insulation

• 6 mm Nitrocell™ footbed -  provides a soft cushioning for an athletic shoe feel. A million microscopic nitrogen bubbles that insulate the wearer from cold surfaces

• Underfoot Chassis™ - give a sure footed platform

• Hexzorb™technology - absorbs heel strike shock for daylong comfort

• Superdri™ lining - is hard wearing, wicks moister away from the wearer’s foot to prevent a sweaty and uncomfortable feel. It is fungus and rot proof so will not smell like cotton-lined boots

• Trax™ outsole - superior grip on a variety of surfaces, the tread is designed to work with the action of the foot

• Comfort Rating: -20ºC to +20ºC