Akko's high quality USB-C to USB-A (standard USB) coiled cable is made from TPU and zinc alloy, the coiled part measures about 11cm but can be extended up to 70cm at most, the overall length is about 1.35 meter which works well for most keyboard set-ups.
Thermoplastic polyurethane, better known as TPU, is a thermoplastic elastomer that is a blend of rubber and plastic. TPU material is tough, flexible, durable and resistant to abrasions like oils and lubricants.