Muck Boots Arctic Sport II Boots - Women's Green 11 MAS12W30 11M. These fun sporting colors make them perfect for trekking in the back woods but also just enjoying the great outdoors. Specifications for Muck Boots Arctic Sport II Mid Boots - Women's: Manufacturer: Muck Boots Gender: Female Age Group: Adults Women's Shoe Width: Medium Boot Style: Winter Boot Footwear Type: Boots Toe Type: Rounded Footwear Upper Fabric/Material: Rubber Insole Material: EVA Water Resistance Level: Waterproof Lining Material: Fleece Insulation: Foam Outsole Material: Slip-Resistant Rugged Midsole Material: EVA Features of Muck Boots Arctic Sport II Mid Boots - Women's 5 mm CR Flex-Foam neoprene is 100percent waterproof with exceptional comfort flexibility shock absorption and heat retention properties; adjusts to the contours of your foot to resist blisters and chafing Soft fleece lining enhances comfort provides superior warmth and is durable for long cold treks Full-length midsole for improved support and longwearing comfort Multi-directional outsole tread pattern for improved traction on slick and uneven terrain Bottom rubber mold is (II) fit which is slightly different than our classic fit in which the rubber is extended coverage Package Contents: Muck Boots Arctic Sport II Mid Boots - Womens Muck Boots MAS12W30 11M: Arctic Sport II Boots - Women's Green 11