Do these covers fit bucket seats and bench seats the same way?

Elastic anchor systems work best on bucket-style seats with distinct frame edges. Bench seats have different geometry — test-fit before committing, and you may need additional fastening points depending on your seat design.

Will these slip during driving or does the elastic hold them in place?

The elastic anchoring is designed to stay put during normal driving, but movement depends on how snugly the covers fit your specific seat shape. High-performance or competition use may require additional stitching or clips.

Can I wash or clean these covers without removing them from the seats?

Spot-cleaning is safe, but full washing requires removal. Hand wash in cool water with mild detergent, air dry completely before reinstalling to prevent mildew and shrinkage.