Obermeyer Thumbs Up Mitten - Toddlers': Fabric & Insulation HydroBlockA(R) Pro 100% Polyester Stretch, HydroBlockA(R) Sport 100% Polyester Twill, HydroBlockA(R) Sport 100% Polyester Strong Weave Permaloft 100gm Product Technologies State of the art performance where you go, whatever the conditions. Rib knit cuffs - Obermeyer offers several styles with a ribbed knit cuff. The ribbed knit design provides an additional weatherproof barrier covering the arm tightly and thereby not allowing any snow or moisture to touch the skin. Ribbed knit by its nature offers thermal value as well as the rib knit fabric has a insulation value. Product Features Everything you would need to be warm dry and comfortable. From weatherproof features to convenient adjustability to accommodating your accessories and valuables. Reinforced palm Reinforced thumb Integrated nose wipe Integrated clips to retain mittens/gloves