SHORELINE 4.0™ is insulated and waterproof, with excellent grip, made for all day comfort. The ankle height boot is perfect for those who do not enjoy wearing a full length wellington but do not want to compromise on the quality.
4MM INSU-FOAM ULTRA™ - gives all round foot comfort and insulation.
5mm POLYOU™ 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.
SUPERLITE® technology - makes this boot 30% lighter than conventional rubber boots, buoyant and extremely comfortable thanks to its' moulded shape.
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.
TRAIL-GRIP™ 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.
![Grubs 5.0 Technology](https://cdn.shopify.com/s/files/1/3105/3748/files/Grubs-50-tech_medium.jpg?v=1524084746)
All Grubs footwear uses self-insulating INSU-FOAM ULTRA bootie construction which acts as a neutral medium between the wearer and the outside.
This unique super stretch material is commonly used in deep sea dry suits, and has a 300% stretch rating. It is then covered with a 4 way stretch knitted nylon jersey which as suggested can expand not only in width but also height.
In our 5.0 TECHNOLOGY™ boots, the bootie is lined with moisture wicking terry knit, which keeps the wearer dry and has a super stretch to fit most calves. As INSU-FOAM ULTRA™ is a temperature neutral material it will keep the wearers foot comfortable in most conditions for a prolonged period.
TEMPERATURE RANGE 70 to -5 Fahrenheit