Features: Made from aluminum alloy, durable, light, good quality. Strong design - 25kg max load. With red rear reflector,keep secure. Lower fork can be adjusted. Attaches to bike seat post - fits 33mm seat posts. Additional bar supports clamp to frame. Side bars prevent pannier bags touching wheels. Both sides have baffle, can carry your friends. Adjustable bag platform. Elastic cords help keep luggage secure.