The perfect marriage of two classic Blackburn products … a cargo rack and bottle cage in one. The OUTPOST CARGO CAGE gives a solution to carrying your odd shaped gear along for the ride.Securely strap down odd size bottles and other gear, such as bags and clothing,Mounts to 2 standard bottle cage bosses,Three sets of mounting holes to fit different size frames,Included silicone backed webbing straps prevents your cargo from jostling free,6mm alloy tube construction,4kgs/8.8lbs carrying capacity,164g w/ straps.