The Flexy Cord™ line of extension cords are designed to be tangle-proof and kink-proof, using material with "memory" that retracts the cord back to its original length. The reduced cord diameter and increased coil diameter was inspired by the design of Slinky toys. Flexy Cords are made in the U.S. and come in a variety of lengths, ranging from 4 inches (extending to 8 feet) to 20 inches (extending to 45 feet), with prices varying according to length. Pricing for the small cord starts at $10.99, while a multi-pack containing five different cord lengths is priced at $79.99.