Muck Boot Pursuit Stealth Rubber Insulated Women's Hunting Boot Synthetic Rubber sole 5 mm neoprene provides comfort and flexibility, along with excellent waterproofing, shock absorption and heat retention properties; adjusts to the shape of your feet to resist blisters and chafing Fleece lining is soft for enhanced comfort, durable for long wear, and provides exceptional warmth in frigid environments; comfort rated from -20 F to 50 F (-30 C to 10 C) Flexible notches and angled topline improve range of movement for walking and bending; etc Sockliner reduces friction and heat build up Cross platform outsole pattern offers stability and grip on slippery, uneven terrains High-grade rubber exterior provides extra toughness and makes for a 100% waterproof hunting boot; rear pull loop for easy on/off