The A2 by Aerosoles Craftwork Riding Boot is a versatile pick for your cold weather wardrobe. This gorgeous knee boot has an elongating look, a stitch line down the middle, and a modern elastic strap that sits low at the heel. Welt construction. HEEL REST and Extended Calf technology for superior comfort. Heel Rest Technology Extended Calf Technology Core Comfort Memory Foam Footbed Aerosoles Diamond Flex Soles Zipper Entry.