Grubs Boots Women's Rubber Boots Frostline Classic

Most GRUBS® rubber boots use an auto-insulating structure INSU-FOAM ULTRA™ Bootie-Konon, which acts as a neutral medium between the wearer and the outside. The bootie is both waterproof and insulating, exceeding the long-term efficiency of waterproof membranes and loft-type insulation. The boots are waterproof according to standard EN ISO 20344:2004 5.7. FROSTLINE 5.0™ is insulated and waterproof, with return grip, made for all-day comfort.

5 MM INSU-FOAM ULTRA™ - provides comfort and insulation around the foot.

6 mm NITROCELL™ insole - offers soft cushioning for a sporty shoe feel. A million microscopic nitrogen bubbles protect the wearer from cold surfaces.

UNDERFOOT CHASSIS™ - provides safety.

HEXZORB™ technology - absorbs heel shocks for comfort throughout the day.

SUPERDRI™ lining - is durable, wicks moisture away from the wearer's foot to avoid a sweaty and uncomfortable feeling. It is resistant to fungi and rot and does not smell like cotton-lined boots.

TRAX™ outsole - remarkable grip on a variety of surfaces, the tread is designed to work with foot movement.

COMFORT RATING - -20 degrees Celsius to +20 degrees Celsius

We recommend buying the same UK size as your everyday shoes, for example, trainers. Grubs boots have a tolerance of 15 mm for a wool blend/thicker sock, which also means that we recommend choosing a size down if you have a half size.