Product Dimensions: 21.70x7.80x3.90 inchDetails:*Features*:*Sturdy Construction*:Made from high-strength aluminum alloy material; our bike rear rack has a sturdy construction to hold up to 55lbs items; perfect for carrying heavy luggage.*Adjustable Structure*:The rear rack seat and side support bars can be adjusted; suitable for most bicycles; such as road bikes; mountain bikes; fat bikes; etc. with seat post diameter of 28-32mm.*Quick Installation & Disassembly*:Come with all installation accessories; tools and user manual. It's easy to install the rear rack. Also can be disassembled when not in use quickly.*Safe Reflector*:Come with red rear reflector; easy to mount it on the back of the bike rear seat to increase visibility on the night cycling and ensure your night cycling safety!*Triangular Design*:Designed with triangular fixing method; more stable and pressure-resistant. With a durable elastic rope; it can hold the cargo more stably.*Specifications*:​ Product Type: Bike Cargo RackColor: BlackMaterial: AluminumLoad Capacity: 25kg/55lbsSeat Size: 14x35cm/5.51x17.78inRecommended Main Pole Diameter: 28-32mm/1.1-1.26inRecommended Side Pole Diameter: 1.7-2.5cm/0.67-0.98inRecommended Bike: 24-27.5inElastic Cord Length: 67cm/26.38inMain Pole Length: 54cm/21.26inItem Weight(Installed): 945g/2.08lbsPackage Size: 55*20*10cm/21.7*7.8*3.9inPackage Weight: 1040g/2.29lbs*Package Lists*:1 x Bike Cargo Rack(Installed)1 x Elastic Cord1 x Red Reflector1 x Wrench2 x Allen Keys1Bag x Screw Accessories1 x User ManualSHIP FROM : USA/CHINASHIP TO : USAAverage Shipping days: 3