Handlebar Bike Bag vs Topeak TrolleyTote Folding MTX Rear Bike Basket, Grey, Black, 35.8 x 34 x 14.2 cm / 14.1” x 13.4” x 5.6” (Folded) 44.3 x 35.8 x 34 cm / 17.4” x 14.1” x 13.4" (Open)

No sources that perform objective hands-on testing have deemed the Handlebar Bike Bag worthy of being included in their Bike Basket roundups, which typically isn't a good sign.

As for the Topeak TrolleyTote Folding MTX Rear Bike Basket, Grey, Black, 35.8 x 34 x 14.2 cm / 14.1” x 13.4” x 5.6” (Folded) 44.3 x 35.8 x 34 cm / 17.4” x 14.1” x 13.4" (Open), it was really well-received by reviewers at bicycling.com, a reliable source that's known for conducting its own, high-quality, in-depth testing. It performed great in its "The Best Bike Baskets for Hauling (Almost) Anything" roundup and was named its "BEST GROCERY HAULER", which, on its own, makes it a product that warrants a closer look.

As a last step, we wanted to do a head-to-head Handlebar Bike Bag vs. Topeak TrolleyTote Folding MTX Rear Bike Basket, Grey, Black, 35.8 x 34 x 14.2 cm / 14.1” x 13.4” x 5.6” (Folded) 44.3 x 35.8 x 34 cm / 17.4” x 14.1” x 13.4" (Open) comparison of their review performance but, unfortunately, weren't able to find any review ratings on either product.