with 4.4 out of 5 stars averaged from over 500 ratings so far. “What I really like about the Stratos is the intelligent modular design philosophy it has,” said one five-star review.

The term 4×4 means a four-wheel-drive vehicle. Technically, the first digit is the number of wheels and the second is the number that are driven, so a four-wheel-drive pickup truck is a 4×4 ...

The Shark Stratos upright vacuum is a splurge, but our testers agree it's worth every penny. Here's why you should add it to your cart ASAP. Our editors and experts handpick every product we feature.