FEATURES: Carry up to two kayaks due to the dual position design that transforms from a J-cradle to two boat stacker position Integrated StrapCatch for easy strap management when loading kayak Upright folds flat when not in use Fully assembled out of the box Locks to load bars with Thule's One Key System Lock Cylinders (sold separately) Universal mounting design fits all types of load bars up to 80.5 mm wide quickly and easily Load straps with buckle bumpers and bow and stern tie downs included for one boat Supports one boat up to 75 lb or two boats with combined weight of 130 lbs or less