Roof Rack Cargo Carrier 64x39x6 - Waterproof 20 CuFt Rooftop Bag

In this review of the Mockins roof rack cargo carrier kit, the bottom line is simple: it is a practical solution for families and outdoor travelers who need reliable extra storage without sacrificing aerodynamics. The kit pairs a metallic black, weatherproof steel cargo basket with a 20 cu ft waterproof rooftop bag and mounting accessories, and is built to support up to 250 lbs. The single biggest reason to buy is the combination of a sturdy, rust-resistant frame and a fully weatherproof bag, which together let users carry bulky gear on long trips with reasonable confidence.

Key Features

• Weatherproof steel frame: The rust-resistant steel construction provides durability and protects the carrier from road exposure, helping it last through repeated trips.
• 250 lb load capacity: The high weight limit allows hauling heavier loads like cooler boxes, duffels and camping gear without overloading the roof.
• Extendable length: Adjustable from 43 in to 64 in, the basket adapts to different load sizes so users can carry long items or compact the rack for smaller loads.
• 20 cu ft waterproof bag: The abrasion-resistant vinyl bag with welded seams and a flap-covered zipper keeps contents dry in rain and during multi-day drives.
• Complete mounting kit: Included buckle straps, ratchet straps, cargo net and combo lock make it possible to secure loads and deter theft without sourcing extra hardware.

Who It's For

The Mockins roof carrier is well suited for weekend campers, road-trippers and families who need extra cargo capacity beyond interior space, particularly on SUVs, vans and cars with crossbars. Its weather-resistant bag and sturdy basket make it useful for multi-day trips where luggage and wet gear must be kept dry and secure.

Those who should look elsewhere include drivers without crossbars (you will need crossbars to mount the basket) and users who expect heavy professional hauling every day; while the shelf is solid for recreational loads up to 250 lbs, commercial use with extreme vibration or point loads may demand a purpose-built heavy-duty rack.

Pros & Cons

Pros

• Solid build with a rust-resistant steel frame that stands up to road exposure.
• Large waterproof bag with welded seams keeps gear dry over long distances.
• Adjustable length and included straps and net make securing different loads straightforward.
• High 250 lb capacity supports bulky camping and travel gear.

Cons

• The soft-shell bag has mixed longevity reports; some users experienced tearing under heavy use so careful packing and strap routing are important.
• Fit can be variable between vehicles, so double-check crossbar spacing and secure attachment before long trips.

Specifications

Basket outer size	64 in x 39 in x 6 in
Expandable length	43 in to 64 in
Load capacity	250 lbs
Waterproof bag size	53 in x 40 in x 17 in (20 cu ft)
Bag material	Abrasion-resistant vinyl with welded seams
Included accessories	Buckle straps, ratchet straps, cargo net, combo lock, carry bag
Finish	Metallic black, rust-resistant steel

Our Verdict

The Mockins roof rack cargo carrier kit offers strong value for recreational users who need dependable extra storage and weather protection. With a sturdy steel basket, an ample waterproof bag and a comprehensive accessory kit, it is a sensible pick for weekend trips and family vacations, provided you confirm crossbar compatibility and pack carefully to avoid wear on the soft bag.

Frequently Asked Questions

Will this fit my car?
It mounts to vehicles with crossbars; verify your crossbar spacing and width before purchase to ensure compatibility.

Is the rooftop bag truly waterproof?
The bag uses abrasion-resistant vinyl, welded seams and a flap-covered zipper to provide strong water resistance for typical road use.

How much weight can it carry?
The system is rated to support up to 250 lbs, but you should also confirm your vehicle roof and crossbar limits before loading.