Ranger Cabot 9" Women's Suede Thinsulate Winter Boots, Charcoal Gray & Pink (RPW109) Upper combines ballistic nylon for toughness with suede for a classic winter style Padded PU foam collar reduces discomfort around ankles B200-gram Thinsulate Insulation package is comfort rated down to -20 F (-29 C) to keep feet warm Thick 4 mm EVA sock liner cushions and supports feet for longwearing comfort TPR shell with rubber sole is waterproof up to stitch line of TPR shell for protection in slush and puddles