Keychains have long been clunky, loud, and overbuilt. Wingback’s Key Loop offers a cleaner way to carry the keys and small essentials you actually need. Instead of a traditional split keyring, the Key Loop uses ultra-high-molecular-weight cord that is 15 times stronger than steel by weight, allowing keys to sit flatter and more comfortably in the pocket. The cord offers excellent tensile strength, durability, abrasion resistance, cut resistance, and energy absorption, while diamond-cut knurling on the machined hardware provides secure grip when adding or removing keys. One side is also compatible with Wingback's Key Cache making it easy to switch between house keys, work passes, car keys, and other accessories when you are on the move. 12-strand ultra-high molecular weight polyethylene cord. Compatible with the Wingback Key Cache. Laser engraved, assembled by hand and packaged in London, UK. Brass: Aerospace grade brass CZ121 from Europe, CNC machined in Birmingham, UK. Steel: Aerospace grade stainless steel from Europe, CNC machined in Birmingham, UK. Black Steel: Aerospace grade 316 stainless steel from Europe, CNC machined in Birmingham, UK. Tungsten carbide carbon finish applied in Cambridge, UK. Dimensions: ~.8" x .5" (20mm x 13.6mm) diameter Please note: The Key Loop is delivered with one metre of fibre cord that you can cut down to suit your needs. If connecting to a lanyard we suggest you use a detachable strap rather than the fibre cord provided in case it gets caught on something while you're wearing it. Cutting the cord will make the key loop non-returnable.