Sick of lugging a hefty shoulder bag out on the town? Cameron Diaz proved why this hands-free style is the ideal companion when you’re on the go.

Last winter, the 53-year-old actress wore a laid-back outfit while running errands with husband Benji Maddentopping off her trendy wide-leg jeans and classic tee with a practical belt bag.

Belt bags give you a wider range of motion and a lighter load to carry while you’re out and about, but still have room to house your essentials. In addition to Diaz, we’ve previously spotted Joanna Gaines and Kylie Kelce wearing the functional purse style — and we know how you can hop on the trend without breaking the bank. Amazon’s fashion department is a goldmine of popular belt bags, and we picked out the very best options to shop starting at $20.

Belt Bags Inspired by Cameron Diaz

Pander Large Belt Bag

This compact yet sizable belt bag has a simple silhouette that looks very similar to the one Diaz just wore. Its interior pocket has a 2-liter capacity, offering plenty of room for a phone, wallet, keychain, and other necessities. It’s also equipped with an exterior zipper compartment, plus smaller interior pockets to keep items organized.

Multiple reviewers swear by the belt bag for travel. “I got this to wear to Italy for two weeks as a crossbody bag… (It) worked well,” one shopper shared. They also noted that the “back pocket was great for storing (a) passport since it lies flat against your body and would be hard for a pickpocket to get into.”

Boutique Fleece Teddy Belt Bag

For something seasonal, try this popular belt bag that’s covered in plush teddy fleece. It has an adjustable strap that can be worn around your waist or fashioned into a crossbody, plus two zipper compartments for your essentials. In addition to its functionality, the bag is a great finishing touch for a winter outfit — no matter if you’re bundled up in a puffer jacket or snow boots.

Vera Bradley Ripstop Portnoy Belt Bag

This option is roomier than the styles listed above, and it has interior pockets to stow tons of must-haves on the go. Plus, it’s made from a durable material that’s rip-resistant and water-repellent, according to the brand, so it’ll be ready to tag along on hikes, boat rides, and other days of exploration.

Cameron Diaz’s clever accessory is a closet staple — check out even practical belt bags to shop at Amazon below.

Baggallini Triple-Zip Belt Bag

Herschel Classic Hip Pack

Calvin Klein Millie Belt Bag

Montana West Crossbody Sling Bag

Vera Bradley Featherweight Quilted Belt Bag