Rupa & Co Ltd manufactures Volt Interlock Drawer. Rupa & Co Ltd is an ISO 9001-2008 awarded company that also manufactures a wide range of knitted garments from innerwear to casual wear to footwear. Volt Interlock Drawer is available with a special stitching that gives high durability. These are made from 100% fine cotton. The double-pouch design and rubber elastic gives all-round comfort. It is offered under the brand name of Jon.