Attributes . Durable Tungsten Carbide Studs for Longer Wear; Sealed in Studs for Maximum Durability; Aggressive Tread for Deep Snow Traction; Fits over All Types of Shoes; Available in Three Heights: 4", 10 and 15"; Patented Angle TreadTM Design Self Cleans; Patented Trim-LineTM Feature Allows the User to Expand the Opening of the 6"; Sized from S XXXXL . Names