Open box and unused. Still in plastic packaging. Comes with instructions. No original box See photos Yaheetech Fluid Bike Trainer Stand-Indoor Bicycle Training Stand for Mountain Road Bike-Portable Foldable Cycling Training Stand w/Fluid Flywheel,Quick-Release,Riser Block Noise Reduction Functional home gym accessory: This fluid bike trainer fits for 26'' to 28'' and 700C wheels, and comes with a quick release skewer, so it requires a bike with a rear quick release wheel. Great for indoor cycling training, also an ideal gift for bicycle lover. Low-noise training stand: Compared with the magnetic trainer, fluid trainers are noticeably quieter, which is a highlight for apartment/condo/shared space dwellers. Simulated outdoor cycling: The fluid-impelled flywheel mechanism makes sure that the ride provided by a fluid trainer is more road-like in feel. Because the faster you ride, the higher the temperature inside will cause, and thicker the fluid will be, which means the trainer?s resistance becomes progressively more challenging. Sturdy metal construction: Constructed of aluminum fluid resistor, and strong and hard high carbon steel stand with the ability to support up to 265 lb / 120kg,our indoor fluid bicycle trainer provides you with the most secure bicycle training method. Unfolded overall dimension: 21.5 x 24.5 x 16?? / 54.5 x 62 x 40.5 cm (WxDxH); Folded overall dimension: 21.5 x 8.5 x 19?? / 54.5 x 21.5 x 48.5 cm(W x Thickness x H)