This is the Hyper Flex 3mm VYRL Split Toe Soft Sole Surf Booties BootsFeatures: Fusion welded seams Square split toe design Integrated Multi-layer sole, heal and toe layers are vulcanized as a unit to provide maximum support while not compromising flexibility Wide finger loop above heel for easy on and off Built using the same materials used in the Hyperflex VYRL wetsuit series, the VYRL boot is the real deal of winter gear. With it&';s quick drying interior and fusion welded seams, this boot will give you maximum warmth.