Helinox Chair Zero Highback Review Pack & Trail Chair One (re) Helinox Chair One Mint MultiBlock Helinox Japan Helinox Chair One Highback (re) Jenson USA. If you want comfort without a weight sacrifice then choose the Chair One Highback. It features an innovative DAC aluminium frame which is light, durable and incredibly easy to assemble. And thanks to the that tall back, it's mighty comfortable too. With a medium pack size, it's a perfect choice for cycle touring, easy going camping et al