Brand: Helinox Helinox Product: Helinox Cup Holder / Black. Size: 3.5 x 5.1 inches (9 x 13 cm). When in Use: 2.5 oz (70 g). When stored: 3.5 oz (100 g). Color: Black. Details: Helinox Helinox Cup Holder is a cup holder that attaches to the edge of a Helinox comfort chair or tactical chair.