Grubs Footwear Technology
All Grub's® footwear uses our self-insulating INSU-FOAM ULTRA™ Bootie construction which acts as a neutral medium between the wearer and the outside.
The bootie is both waterproof and insulating and exceeds the long-term effectiveness of waterproof membranes and lofted insulations, such as GORE-TEX® and 3M Thinsulate™
All our footwear uses self-insulating INSU-FOAM ULTRA bootie construction which acts as a neutral medium between the wearer and the outside.
We use a super stretch material commonly used in deep sea dry suits, this material has 300% stretch and is covered with a 4 way stretch knitted nylon jersey which as suggested can expand not only in width but also height.